21493681632

素因数分解:

$2^5\times 3^2\times {\mathrm{397}}^1\times {\mathrm{187987}}^1$

素因数の和:188400

約数の個数: 72

約数和(自身を含む): 61276944456

約数和(自身を除く): 39783262824

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 72, 96, 144, 288, 397, 794, 1191, 1588, 2382, 3176, 3573, 4764, 6352, 7146, 9528, 12704, 14292, 19056, 28584, 38112, 57168, 114336, 187987, 375974, 563961, 751948, 1127922, 1503896, 1691883, 2255844, 3007792, 3383766, 4511688, 6015584, 6767532, 9023376, 13535064, 18046752, 27070128, 54140256, 74630839, 149261678, 223892517, 298523356, 447785034, 597046712, 671677551, 895570068, 1194093424, 1343355102, 1791140136, 2388186848, 2686710204, 3582280272, 5373420408, 7164560544, 10746840816, 21493681632]

約数ペア:

[(1, 21493681632), (2, 10746840816), (3, 7164560544), (4, 5373420408), (6, 3582280272), (8, 2686710204), (9, 2388186848), (12, 1791140136), (16, 1343355102), (18, 1194093424), (24, 895570068), (32, 671677551), (36, 597046712), (48, 447785034), (72, 298523356), (96, 223892517), (144, 149261678), (288, 74630839), (397, 54140256), (794, 27070128), (1191, 18046752), (1588, 13535064), (2382, 9023376), (3176, 6767532), (3573, 6015584), (4764, 4511688), (6352, 3383766), (7146, 3007792), (9528, 2255844), (12704, 1691883), (14292, 1503896), (19056, 1127922), (28584, 751948), (38112, 563961), (57168, 375974), (114336, 187987)]