18420272

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{79}}^1$

素因数の和:178

約数の個数: 80

約数和(自身を含む): 41664000

約数和(自身を除く): 23243728

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 38, 52, 59, 76, 79, 104, 118, 152, 158, 208, 236, 247, 304, 316, 472, 494, 632, 767, 944, 988, 1027, 1121, 1264, 1501, 1534, 1976, 2054, 2242, 3002, 3068, 3952, 4108, 4484, 4661, 6004, 6136, 8216, 8968, 9322, 12008, 12272, 14573, 16432, 17936, 18644, 19513, 24016, 29146, 37288, 39026, 58292, 60593, 74576, 78052, 88559, 116584, 121186, 156104, 177118, 233168, 242372, 312208, 354236, 484744, 708472, 969488, 1151267, 1416944, 2302534, 4605068, 9210136, 18420272]

約数ペア:

[(1, 18420272), (2, 9210136), (4, 4605068), (8, 2302534), (13, 1416944), (16, 1151267), (19, 969488), (26, 708472), (38, 484744), (52, 354236), (59, 312208), (76, 242372), (79, 233168), (104, 177118), (118, 156104), (152, 121186), (158, 116584), (208, 88559), (236, 78052), (247, 74576), (304, 60593), (316, 58292), (472, 39026), (494, 37288), (632, 29146), (767, 24016), (944, 19513), (988, 18644), (1027, 17936), (1121, 16432), (1264, 14573), (1501, 12272), (1534, 12008), (1976, 9322), (2054, 8968), (2242, 8216), (3002, 6136), (3068, 6004), (3952, 4661), (4108, 4484)]