21793980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{27941}}^1$

素因数の和:27966

約数の個数: 48

約数和(自身を含む): 65719584

約数和(自身を除く): 43925604

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 27941, 55882, 83823, 111764, 139705, 167646, 279410, 335292, 363233, 419115, 558820, 726466, 838230, 1089699, 1452932, 1676460, 1816165, 2179398, 3632330, 4358796, 5448495, 7264660, 10896990, 21793980]

約数ペア:

[(1, 21793980), (2, 10896990), (3, 7264660), (4, 5448495), (5, 4358796), (6, 3632330), (10, 2179398), (12, 1816165), (13, 1676460), (15, 1452932), (20, 1089699), (26, 838230), (30, 726466), (39, 558820), (52, 419115), (60, 363233), (65, 335292), (78, 279410), (130, 167646), (156, 139705), (195, 111764), (260, 83823), (390, 55882), (780, 27941)]