15811120

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{661}}^1$

素因数の和:710

約数の個数: 80

約数和(自身を含む): 41372352

約数和(自身を除く): 25561232

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 23, 26, 40, 46, 52, 65, 80, 92, 104, 115, 130, 184, 208, 230, 260, 299, 368, 460, 520, 598, 661, 920, 1040, 1196, 1322, 1495, 1840, 2392, 2644, 2990, 3305, 4784, 5288, 5980, 6610, 8593, 10576, 11960, 13220, 15203, 17186, 23920, 26440, 30406, 34372, 42965, 52880, 60812, 68744, 76015, 85930, 121624, 137488, 152030, 171860, 197639, 243248, 304060, 343720, 395278, 608120, 687440, 790556, 988195, 1216240, 1581112, 1976390, 3162224, 3952780, 7905560, 15811120]

約数ペア:

[(1, 15811120), (2, 7905560), (4, 3952780), (5, 3162224), (8, 1976390), (10, 1581112), (13, 1216240), (16, 988195), (20, 790556), (23, 687440), (26, 608120), (40, 395278), (46, 343720), (52, 304060), (65, 243248), (80, 197639), (92, 171860), (104, 152030), (115, 137488), (130, 121624), (184, 85930), (208, 76015), (230, 68744), (260, 60812), (299, 52880), (368, 42965), (460, 34372), (520, 30406), (598, 26440), (661, 23920), (920, 17186), (1040, 15203), (1196, 13220), (1322, 11960), (1495, 10576), (1840, 8593), (2392, 6610), (2644, 5980), (2990, 5288), (3305, 4784)]