21795056

素因数分解:

$2^4\times {\mathrm{61}}^1\times {\mathrm{137}}^1\times {\mathrm{163}}^1$

素因数の和:369

約数の個数: 40

約数和(自身を含む): 43498704

約数和(自身を除く): 21703648

約数列:

[1, 2, 4, 8, 16, 61, 122, 137, 163, 244, 274, 326, 488, 548, 652, 976, 1096, 1304, 2192, 2608, 8357, 9943, 16714, 19886, 22331, 33428, 39772, 44662, 66856, 79544, 89324, 133712, 159088, 178648, 357296, 1362191, 2724382, 5448764, 10897528, 21795056]

約数ペア:

[(1, 21795056), (2, 10897528), (4, 5448764), (8, 2724382), (16, 1362191), (61, 357296), (122, 178648), (137, 159088), (163, 133712), (244, 89324), (274, 79544), (326, 66856), (488, 44662), (548, 39772), (652, 33428), (976, 22331), (1096, 19886), (1304, 16714), (2192, 9943), (2608, 8357)]