20909850

素因数分解:

$2^1\times 3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{10723}}^1$

素因数の和:10751

約数の個数: 48

約数和(自身を含む): 55850592

約数和(自身を除く): 34940742

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 25, 26, 30, 39, 50, 65, 75, 78, 130, 150, 195, 325, 390, 650, 975, 1950, 10723, 21446, 32169, 53615, 64338, 107230, 139399, 160845, 268075, 278798, 321690, 418197, 536150, 696995, 804225, 836394, 1393990, 1608450, 2090985, 3484975, 4181970, 6969950, 10454925, 20909850]

約数ペア:

[(1, 20909850), (2, 10454925), (3, 6969950), (5, 4181970), (6, 3484975), (10, 2090985), (13, 1608450), (15, 1393990), (25, 836394), (26, 804225), (30, 696995), (39, 536150), (50, 418197), (65, 321690), (75, 278798), (78, 268075), (130, 160845), (150, 139399), (195, 107230), (325, 64338), (390, 53615), (650, 32169), (975, 21446), (1950, 10723)]