20199785840

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^2\times {\mathrm{1494067}}^1$

素因数の和:1494106

約数の個数: 60

約数和(自身を含む): 50855086584

約数和(自身を除く): 30655300744

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 169, 208, 260, 338, 520, 676, 845, 1040, 1352, 1690, 2704, 3380, 6760, 13520, 1494067, 2988134, 5976268, 7470335, 11952536, 14940670, 19422871, 23905072, 29881340, 38845742, 59762680, 77691484, 97114355, 119525360, 155382968, 194228710, 252497323, 310765936, 388457420, 504994646, 776914840, 1009989292, 1262486615, 1553829680, 2019978584, 2524973230, 4039957168, 5049946460, 10099892920, 20199785840]

約数ペア:

[(1, 20199785840), (2, 10099892920), (4, 5049946460), (5, 4039957168), (8, 2524973230), (10, 2019978584), (13, 1553829680), (16, 1262486615), (20, 1009989292), (26, 776914840), (40, 504994646), (52, 388457420), (65, 310765936), (80, 252497323), (104, 194228710), (130, 155382968), (169, 119525360), (208, 97114355), (260, 77691484), (338, 59762680), (520, 38845742), (676, 29881340), (845, 23905072), (1040, 19422871), (1352, 14940670), (1690, 11952536), (2704, 7470335), (3380, 5976268), (6760, 2988134), (13520, 1494067)]