640041688

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{15121}}^1$

素因数の和:15188

約数の個数: 64

約数和(自身を含む): 1448082720

約数和(自身を除く): 808041032

約数列:

[1, 2, 4, 8, 11, 13, 22, 26, 37, 44, 52, 74, 88, 104, 143, 148, 286, 296, 407, 481, 572, 814, 962, 1144, 1628, 1924, 3256, 3848, 5291, 10582, 15121, 21164, 30242, 42328, 60484, 120968, 166331, 196573, 332662, 393146, 559477, 665324, 786292, 1118954, 1330648, 1572584, 2162303, 2237908, 4324606, 4475816, 6154247, 7273201, 8649212, 12308494, 14546402, 17298424, 24616988, 29092804, 49233976, 58185608, 80005211, 160010422, 320020844, 640041688]

約数ペア:

[(1, 640041688), (2, 320020844), (4, 160010422), (8, 80005211), (11, 58185608), (13, 49233976), (22, 29092804), (26, 24616988), (37, 17298424), (44, 14546402), (52, 12308494), (74, 8649212), (88, 7273201), (104, 6154247), (143, 4475816), (148, 4324606), (286, 2237908), (296, 2162303), (407, 1572584), (481, 1330648), (572, 1118954), (814, 786292), (962, 665324), (1144, 559477), (1628, 393146), (1924, 332662), (3256, 196573), (3848, 166331), (5291, 120968), (10582, 60484), (15121, 42328), (21164, 30242)]