128764494080

素因数分解:

$2^8\times 5^1\times {\mathrm{313}}^1\times {\mathrm{321397}}^1$

素因数の和:321731

約数の個数: 72

約数和(自身を含む): 309417568152

約数和(自身を除く): 180653074072

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 313, 320, 626, 640, 1252, 1280, 1565, 2504, 3130, 5008, 6260, 10016, 12520, 20032, 25040, 40064, 50080, 80128, 100160, 200320, 321397, 400640, 642794, 1285588, 1606985, 2571176, 3213970, 5142352, 6427940, 10284704, 12855880, 20569408, 25711760, 41138816, 51423520, 82277632, 100597261, 102847040, 201194522, 205694080, 402389044, 411388160, 502986305, 804778088, 1005972610, 1609556176, 2011945220, 3219112352, 4023890440, 6438224704, 8047780880, 12876449408, 16095561760, 25752898816, 32191123520, 64382247040, 128764494080]

約数ペア:

[(1, 128764494080), (2, 64382247040), (4, 32191123520), (5, 25752898816), (8, 16095561760), (10, 12876449408), (16, 8047780880), (20, 6438224704), (32, 4023890440), (40, 3219112352), (64, 2011945220), (80, 1609556176), (128, 1005972610), (160, 804778088), (256, 502986305), (313, 411388160), (320, 402389044), (626, 205694080), (640, 201194522), (1252, 102847040), (1280, 100597261), (1565, 82277632), (2504, 51423520), (3130, 41138816), (5008, 25711760), (6260, 20569408), (10016, 12855880), (12520, 10284704), (20032, 6427940), (25040, 5142352), (40064, 3213970), (50080, 2571176), (80128, 1606985), (100160, 1285588), (200320, 642794), (321397, 400640)]