21631088

素因数分解:

$2^4\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{599}}^1$

素因数の和:705

約数の個数: 40

約数和(自身を含む): 43821600

約数和(自身を除く): 22190512

約数列:

[1, 2, 4, 8, 16, 37, 61, 74, 122, 148, 244, 296, 488, 592, 599, 976, 1198, 2257, 2396, 4514, 4792, 9028, 9584, 18056, 22163, 36112, 36539, 44326, 73078, 88652, 146156, 177304, 292312, 354608, 584624, 1351943, 2703886, 5407772, 10815544, 21631088]

約数ペア:

[(1, 21631088), (2, 10815544), (4, 5407772), (8, 2703886), (16, 1351943), (37, 584624), (61, 354608), (74, 292312), (122, 177304), (148, 146156), (244, 88652), (296, 73078), (488, 44326), (592, 36539), (599, 36112), (976, 22163), (1198, 18056), (2257, 9584), (2396, 9028), (4514, 4792)]