18190978898

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{2131}}^1\times {\mathrm{9767}}^1$

素因数の和:11942

約数の個数: 32

約数和(自身を含む): 29988541440

約数和(自身を除く): 11797562542

約数列:

[1, 2, 19, 23, 38, 46, 437, 874, 2131, 4262, 9767, 19534, 40489, 49013, 80978, 98026, 185573, 224641, 371146, 449282, 931247, 1862494, 4268179, 8536358, 20813477, 41626954, 395456063, 478709971, 790912126, 957419942, 9095489449, 18190978898]

約数ペア:

[(1, 18190978898), (2, 9095489449), (19, 957419942), (23, 790912126), (38, 478709971), (46, 395456063), (437, 41626954), (874, 20813477), (2131, 8536358), (4262, 4268179), (9767, 1862494), (19534, 931247), (40489, 449282), (49013, 371146), (80978, 224641), (98026, 185573)]