639012920

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{809}}^1$

素因数の和:878

約数の個数: 192

約数和(自身を含む): 1861574400

約数和(自身を除く): 1222561480

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 31, 35, 40, 49, 52, 56, 62, 65, 70, 91, 98, 104, 124, 130, 140, 155, 182, 196, 217, 245, 248, 260, 280, 310, 364, 392, 403, 434, 455, 490, 520, 620, 637, 728, 806, 809, 868, 910, 980, 1085, 1240, 1274, 1519, 1612, 1618, 1736, 1820, 1960, 2015, 2170, 2548, 2821, 3038, 3185, 3224, 3236, 3640, 4030, 4045, 4340, 5096, 5642, 5663, 6076, 6370, 6472, 7595, 8060, 8090, 8680, 10517, 11284, 11326, 12152, 12740, 14105, 15190, 16120, 16180, 19747, 21034, 22568, 22652, 25079, 25480, 28210, 28315, 30380, 32360, 39494, 39641, 42068, 45304, 50158, 52585, 56420, 56630, 60760, 73619, 78988, 79282, 84136, 98735, 100316, 105170, 112840, 113260, 125395, 147238, 157976, 158564, 175553, 197470, 198205, 200632, 210340, 226520, 250790, 294476, 317128, 326027, 351106, 368095, 394940, 396410, 420680, 501580, 515333, 588952, 652054, 702212, 736190, 789880, 792820, 877765, 1003160, 1030666, 1228871, 1304108, 1404424, 1472380, 1585640, 1630135, 1755530, 2061332, 2282189, 2457742, 2576665, 2608216, 2944760, 3260270, 3511060, 4122664, 4564378, 4915484, 5153330, 6144355, 6520540, 7022120, 9128756, 9830968, 10306660, 11410945, 12288710, 13041080, 15975323, 18257512, 20613320, 22821890, 24577420, 31950646, 45643780, 49154840, 63901292, 79876615, 91287560, 127802584, 159753230, 319506460, 639012920]

約数ペア:

[(1, 639012920), (2, 319506460), (4, 159753230), (5, 127802584), (7, 91287560), (8, 79876615), (10, 63901292), (13, 49154840), (14, 45643780), (20, 31950646), (26, 24577420), (28, 22821890), (31, 20613320), (35, 18257512), (40, 15975323), (49, 13041080), (52, 12288710), (56, 11410945), (62, 10306660), (65, 9830968), (70, 9128756), (91, 7022120), (98, 6520540), (104, 6144355), (124, 5153330), (130, 4915484), (140, 4564378), (155, 4122664), (182, 3511060), (196, 3260270), (217, 2944760), (245, 2608216), (248, 2576665), (260, 2457742), (280, 2282189), (310, 2061332), (364, 1755530), (392, 1630135), (403, 1585640), (434, 1472380), (455, 1404424), (490, 1304108), (520, 1228871), (620, 1030666), (637, 1003160), (728, 877765), (806, 792820), (809, 789880), (868, 736190), (910, 702212), (980, 652054), (1085, 588952), (1240, 515333), (1274, 501580), (1519, 420680), (1612, 396410), (1618, 394940), (1736, 368095), (1820, 351106), (1960, 326027), (2015, 317128), (2170, 294476), (2548, 250790), (2821, 226520), (3038, 210340), (3185, 200632), (3224, 198205), (3236, 197470), (3640, 175553), (4030, 158564), (4045, 157976), (4340, 147238), (5096, 125395), (5642, 113260), (5663, 112840), (6076, 105170), (6370, 100316), (6472, 98735), (7595, 84136), (8060, 79282), (8090, 78988), (8680, 73619), (10517, 60760), (11284, 56630), (11326, 56420), (12152, 52585), (12740, 50158), (14105, 45304), (15190, 42068), (16120, 39641), (16180, 39494), (19747, 32360), (21034, 30380), (22568, 28315), (22652, 28210), (25079, 25480)]