868930720

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{137}}^1\times {\mathrm{809}}^1$

素因数の和:975

約数の個数: 144

約数和(自身を含む): 2408411880

約数和(自身を除く): 1539481160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 70, 80, 98, 112, 137, 140, 160, 196, 224, 245, 274, 280, 392, 490, 548, 560, 685, 784, 809, 959, 980, 1096, 1120, 1370, 1568, 1618, 1918, 1960, 2192, 2740, 3236, 3836, 3920, 4045, 4384, 4795, 5480, 5663, 6472, 6713, 7672, 7840, 8090, 9590, 10960, 11326, 12944, 13426, 15344, 16180, 19180, 21920, 22652, 25888, 26852, 28315, 30688, 32360, 33565, 38360, 39641, 45304, 53704, 56630, 64720, 67130, 76720, 79282, 90608, 107408, 110833, 113260, 129440, 134260, 153440, 158564, 181216, 198205, 214816, 221666, 226520, 268520, 317128, 396410, 443332, 453040, 537040, 554165, 634256, 775831, 792820, 886664, 906080, 1074080, 1108330, 1268512, 1551662, 1585640, 1773328, 2216660, 3103324, 3171280, 3546656, 3879155, 4433320, 5430817, 6206648, 6342560, 7758310, 8866640, 10861634, 12413296, 15516620, 17733280, 21723268, 24826592, 27154085, 31033240, 43446536, 54308170, 62066480, 86893072, 108616340, 124132960, 173786144, 217232680, 434465360, 868930720]

約数ペア:

[(1, 868930720), (2, 434465360), (4, 217232680), (5, 173786144), (7, 124132960), (8, 108616340), (10, 86893072), (14, 62066480), (16, 54308170), (20, 43446536), (28, 31033240), (32, 27154085), (35, 24826592), (40, 21723268), (49, 17733280), (56, 15516620), (70, 12413296), (80, 10861634), (98, 8866640), (112, 7758310), (137, 6342560), (140, 6206648), (160, 5430817), (196, 4433320), (224, 3879155), (245, 3546656), (274, 3171280), (280, 3103324), (392, 2216660), (490, 1773328), (548, 1585640), (560, 1551662), (685, 1268512), (784, 1108330), (809, 1074080), (959, 906080), (980, 886664), (1096, 792820), (1120, 775831), (1370, 634256), (1568, 554165), (1618, 537040), (1918, 453040), (1960, 443332), (2192, 396410), (2740, 317128), (3236, 268520), (3836, 226520), (3920, 221666), (4045, 214816), (4384, 198205), (4795, 181216), (5480, 158564), (5663, 153440), (6472, 134260), (6713, 129440), (7672, 113260), (7840, 110833), (8090, 107408), (9590, 90608), (10960, 79282), (11326, 76720), (12944, 67130), (13426, 64720), (15344, 56630), (16180, 53704), (19180, 45304), (21920, 39641), (22652, 38360), (25888, 33565), (26852, 32360), (28315, 30688)]