20149840

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{233}}^1$

素因数の和:316

約数の個数: 80

約数和(自身を含む): 50139648

約数和(自身を除く): 29989808

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 47, 80, 92, 94, 115, 184, 188, 230, 233, 235, 368, 376, 460, 466, 470, 752, 920, 932, 940, 1081, 1165, 1840, 1864, 1880, 2162, 2330, 3728, 3760, 4324, 4660, 5359, 5405, 8648, 9320, 10718, 10810, 10951, 17296, 18640, 21436, 21620, 21902, 26795, 42872, 43240, 43804, 53590, 54755, 85744, 86480, 87608, 107180, 109510, 175216, 214360, 219020, 251873, 428720, 438040, 503746, 876080, 1007492, 1259365, 2014984, 2518730, 4029968, 5037460, 10074920, 20149840]

約数ペア:

[(1, 20149840), (2, 10074920), (4, 5037460), (5, 4029968), (8, 2518730), (10, 2014984), (16, 1259365), (20, 1007492), (23, 876080), (40, 503746), (46, 438040), (47, 428720), (80, 251873), (92, 219020), (94, 214360), (115, 175216), (184, 109510), (188, 107180), (230, 87608), (233, 86480), (235, 85744), (368, 54755), (376, 53590), (460, 43804), (466, 43240), (470, 42872), (752, 26795), (920, 21902), (932, 21620), (940, 21436), (1081, 18640), (1165, 17296), (1840, 10951), (1864, 10810), (1880, 10718), (2162, 9320), (2330, 8648), (3728, 5405), (3760, 5359), (4324, 4660)]