20619952

素因数分解:

$2^4\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{571}}^1$

素因数の和:677

約数の個数: 40

約数和(自身を含む): 41776592

約数和(自身を除く): 21156640

約数列:

[1, 2, 4, 8, 16, 37, 61, 74, 122, 148, 244, 296, 488, 571, 592, 976, 1142, 2257, 2284, 4514, 4568, 9028, 9136, 18056, 21127, 34831, 36112, 42254, 69662, 84508, 139324, 169016, 278648, 338032, 557296, 1288747, 2577494, 5154988, 10309976, 20619952]

約数ペア:

[(1, 20619952), (2, 10309976), (4, 5154988), (8, 2577494), (16, 1288747), (37, 557296), (61, 338032), (74, 278648), (122, 169016), (148, 139324), (244, 84508), (296, 69662), (488, 42254), (571, 36112), (592, 34831), (976, 21127), (1142, 18056), (2257, 9136), (2284, 9028), (4514, 4568)]