21226400

素因数分解:

$2^5\times 5^2\times {\mathrm{13}}^2\times {\mathrm{157}}^1$

素因数の和:203

約数の個数: 108

約数和(自身を含む): 56469042

約数和(自身を除く): 35242642

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 32, 40, 50, 52, 65, 80, 100, 104, 130, 157, 160, 169, 200, 208, 260, 314, 325, 338, 400, 416, 520, 628, 650, 676, 785, 800, 845, 1040, 1256, 1300, 1352, 1570, 1690, 2041, 2080, 2512, 2600, 2704, 3140, 3380, 3925, 4082, 4225, 5024, 5200, 5408, 6280, 6760, 7850, 8164, 8450, 10205, 10400, 12560, 13520, 15700, 16328, 16900, 20410, 25120, 26533, 27040, 31400, 32656, 33800, 40820, 51025, 53066, 62800, 65312, 67600, 81640, 102050, 106132, 125600, 132665, 135200, 163280, 204100, 212264, 265330, 326560, 408200, 424528, 530660, 663325, 816400, 849056, 1061320, 1326650, 1632800, 2122640, 2653300, 4245280, 5306600, 10613200, 21226400]

約数ペア:

[(1, 21226400), (2, 10613200), (4, 5306600), (5, 4245280), (8, 2653300), (10, 2122640), (13, 1632800), (16, 1326650), (20, 1061320), (25, 849056), (26, 816400), (32, 663325), (40, 530660), (50, 424528), (52, 408200), (65, 326560), (80, 265330), (100, 212264), (104, 204100), (130, 163280), (157, 135200), (160, 132665), (169, 125600), (200, 106132), (208, 102050), (260, 81640), (314, 67600), (325, 65312), (338, 62800), (400, 53066), (416, 51025), (520, 40820), (628, 33800), (650, 32656), (676, 31400), (785, 27040), (800, 26533), (845, 25120), (1040, 20410), (1256, 16900), (1300, 16328), (1352, 15700), (1570, 13520), (1690, 12560), (2041, 10400), (2080, 10205), (2512, 8450), (2600, 8164), (2704, 7850), (3140, 6760), (3380, 6280), (3925, 5408), (4082, 5200), (4225, 5024)]