20121388288

素因数分解:

$2^8\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{26261}}^1$

素因数の和:26391

約数の個数: 72

約数和(自身を含む): 41708993256

約数和(自身を除く): 21587604968

約数列:

[1, 2, 4, 8, 16, 32, 41, 64, 73, 82, 128, 146, 164, 256, 292, 328, 584, 656, 1168, 1312, 2336, 2624, 2993, 4672, 5248, 5986, 9344, 10496, 11972, 18688, 23944, 26261, 47888, 52522, 95776, 105044, 191552, 210088, 383104, 420176, 766208, 840352, 1076701, 1680704, 1917053, 2153402, 3361408, 3834106, 4306804, 6722816, 7668212, 8613608, 15336424, 17227216, 30672848, 34454432, 61345696, 68908864, 78599173, 122691392, 137817728, 157198346, 245382784, 275635456, 314396692, 490765568, 628793384, 1257586768, 2515173536, 5030347072, 10060694144, 20121388288]

約数ペア:

[(1, 20121388288), (2, 10060694144), (4, 5030347072), (8, 2515173536), (16, 1257586768), (32, 628793384), (41, 490765568), (64, 314396692), (73, 275635456), (82, 245382784), (128, 157198346), (146, 137817728), (164, 122691392), (256, 78599173), (292, 68908864), (328, 61345696), (584, 34454432), (656, 30672848), (1168, 17227216), (1312, 15336424), (2336, 8613608), (2624, 7668212), (2993, 6722816), (4672, 4306804), (5248, 3834106), (5986, 3361408), (9344, 2153402), (10496, 1917053), (11972, 1680704), (18688, 1076701), (23944, 840352), (26261, 766208), (47888, 420176), (52522, 383104), (95776, 210088), (105044, 191552)]