38720240

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1201}}^1$

素因数の和:1258

約数の個数: 80

約数和(自身を含む): 100160256

約数和(自身を除く): 61440016

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 40, 52, 62, 65, 80, 104, 124, 130, 155, 208, 248, 260, 310, 403, 496, 520, 620, 806, 1040, 1201, 1240, 1612, 2015, 2402, 2480, 3224, 4030, 4804, 6005, 6448, 8060, 9608, 12010, 15613, 16120, 19216, 24020, 31226, 32240, 37231, 48040, 62452, 74462, 78065, 96080, 124904, 148924, 156130, 186155, 249808, 297848, 312260, 372310, 484003, 595696, 624520, 744620, 968006, 1249040, 1489240, 1936012, 2420015, 2978480, 3872024, 4840030, 7744048, 9680060, 19360120, 38720240]

約数ペア:

[(1, 38720240), (2, 19360120), (4, 9680060), (5, 7744048), (8, 4840030), (10, 3872024), (13, 2978480), (16, 2420015), (20, 1936012), (26, 1489240), (31, 1249040), (40, 968006), (52, 744620), (62, 624520), (65, 595696), (80, 484003), (104, 372310), (124, 312260), (130, 297848), (155, 249808), (208, 186155), (248, 156130), (260, 148924), (310, 124904), (403, 96080), (496, 78065), (520, 74462), (620, 62452), (806, 48040), (1040, 37231), (1201, 32240), (1240, 31226), (1612, 24020), (2015, 19216), (2402, 16120), (2480, 15613), (3224, 12010), (4030, 9608), (4804, 8060), (6005, 6448)]