21125384

素因数分解:

$2^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{283}}^1$

素因数の和:370

約数の個数: 64

約数和(自身を含む): 47984640

約数和(自身を除く): 26859256

約数列:

[1, 2, 4, 7, 8, 14, 28, 31, 43, 56, 62, 86, 124, 172, 217, 248, 283, 301, 344, 434, 566, 602, 868, 1132, 1204, 1333, 1736, 1981, 2264, 2408, 2666, 3962, 5332, 7924, 8773, 9331, 10664, 12169, 15848, 17546, 18662, 24338, 35092, 37324, 48676, 61411, 70184, 74648, 85183, 97352, 122822, 170366, 245644, 340732, 377239, 491288, 681464, 754478, 1508956, 2640673, 3017912, 5281346, 10562692, 21125384]

約数ペア:

[(1, 21125384), (2, 10562692), (4, 5281346), (7, 3017912), (8, 2640673), (14, 1508956), (28, 754478), (31, 681464), (43, 491288), (56, 377239), (62, 340732), (86, 245644), (124, 170366), (172, 122822), (217, 97352), (248, 85183), (283, 74648), (301, 70184), (344, 61411), (434, 48676), (566, 37324), (602, 35092), (868, 24338), (1132, 18662), (1204, 17546), (1333, 15848), (1736, 12169), (1981, 10664), (2264, 9331), (2408, 8773), (2666, 7924), (3962, 5332)]