21620464

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{787}}^1$

素因数の和:913

約数の個数: 40

約数和(自身を含む): 44849808

約数和(自身を除く): 23229344

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 101, 136, 202, 272, 404, 787, 808, 1574, 1616, 1717, 3148, 3434, 6296, 6868, 12592, 13379, 13736, 26758, 27472, 53516, 79487, 107032, 158974, 214064, 317948, 635896, 1271792, 1351279, 2702558, 5405116, 10810232, 21620464]

約数ペア:

[(1, 21620464), (2, 10810232), (4, 5405116), (8, 2702558), (16, 1351279), (17, 1271792), (34, 635896), (68, 317948), (101, 214064), (136, 158974), (202, 107032), (272, 79487), (404, 53516), (787, 27472), (808, 26758), (1574, 13736), (1616, 13379), (1717, 12592), (3148, 6868), (3434, 6296)]