255526180

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{647}}^1$

素因数の和:714

約数の個数: 144

約数和(自身を含む): 694987776

約数和(自身を除く): 439461596

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 31, 35, 49, 52, 62, 65, 70, 91, 98, 124, 130, 140, 155, 182, 196, 217, 245, 260, 310, 364, 403, 434, 455, 490, 620, 637, 647, 806, 868, 910, 980, 1085, 1274, 1294, 1519, 1612, 1820, 2015, 2170, 2548, 2588, 2821, 3038, 3185, 3235, 4030, 4340, 4529, 5642, 6076, 6370, 6470, 7595, 8060, 8411, 9058, 11284, 12740, 12940, 14105, 15190, 16822, 18116, 19747, 20057, 22645, 28210, 30380, 31703, 33644, 39494, 40114, 42055, 45290, 56420, 58877, 63406, 78988, 80228, 84110, 90580, 98735, 100285, 117754, 126812, 140399, 158515, 168220, 197470, 200570, 235508, 260741, 280798, 294385, 317030, 394940, 401140, 412139, 521482, 561596, 588770, 634060, 701995, 824278, 982793, 1042964, 1177540, 1303705, 1403990, 1648556, 1825187, 1965586, 2060695, 2607410, 2807980, 3650374, 3931172, 4121390, 4913965, 5214820, 7300748, 8242780, 9125935, 9827930, 12776309, 18251870, 19655860, 25552618, 36503740, 51105236, 63881545, 127763090, 255526180]

約数ペア:

[(1, 255526180), (2, 127763090), (4, 63881545), (5, 51105236), (7, 36503740), (10, 25552618), (13, 19655860), (14, 18251870), (20, 12776309), (26, 9827930), (28, 9125935), (31, 8242780), (35, 7300748), (49, 5214820), (52, 4913965), (62, 4121390), (65, 3931172), (70, 3650374), (91, 2807980), (98, 2607410), (124, 2060695), (130, 1965586), (140, 1825187), (155, 1648556), (182, 1403990), (196, 1303705), (217, 1177540), (245, 1042964), (260, 982793), (310, 824278), (364, 701995), (403, 634060), (434, 588770), (455, 561596), (490, 521482), (620, 412139), (637, 401140), (647, 394940), (806, 317030), (868, 294385), (910, 280798), (980, 260741), (1085, 235508), (1274, 200570), (1294, 197470), (1519, 168220), (1612, 158515), (1820, 140399), (2015, 126812), (2170, 117754), (2548, 100285), (2588, 98735), (2821, 90580), (3038, 84110), (3185, 80228), (3235, 78988), (4030, 63406), (4340, 58877), (4529, 56420), (5642, 45290), (6076, 42055), (6370, 40114), (6470, 39494), (7595, 33644), (8060, 31703), (8411, 30380), (9058, 28210), (11284, 22645), (12740, 20057), (12940, 19747), (14105, 18116), (15190, 16822)]