21668680

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^4\times {\mathrm{37}}^1$

素因数の和:92

約数の個数: 80

約数和(自身を含む): 55079100

約数和(自身を除く): 33410420

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 37, 40, 44, 55, 74, 88, 110, 121, 148, 185, 220, 242, 296, 370, 407, 440, 484, 605, 740, 814, 968, 1210, 1331, 1480, 1628, 2035, 2420, 2662, 3256, 4070, 4477, 4840, 5324, 6655, 8140, 8954, 10648, 13310, 14641, 16280, 17908, 22385, 26620, 29282, 35816, 44770, 49247, 53240, 58564, 73205, 89540, 98494, 117128, 146410, 179080, 196988, 246235, 292820, 393976, 492470, 541717, 585640, 984940, 1083434, 1969880, 2166868, 2708585, 4333736, 5417170, 10834340, 21668680]

約数ペア:

[(1, 21668680), (2, 10834340), (4, 5417170), (5, 4333736), (8, 2708585), (10, 2166868), (11, 1969880), (20, 1083434), (22, 984940), (37, 585640), (40, 541717), (44, 492470), (55, 393976), (74, 292820), (88, 246235), (110, 196988), (121, 179080), (148, 146410), (185, 117128), (220, 98494), (242, 89540), (296, 73205), (370, 58564), (407, 53240), (440, 49247), (484, 44770), (605, 35816), (740, 29282), (814, 26620), (968, 22385), (1210, 17908), (1331, 16280), (1480, 14641), (1628, 13310), (2035, 10648), (2420, 8954), (2662, 8140), (3256, 6655), (4070, 5324), (4477, 4840)]