21117408

素因数分解:

$2^5\times 3^1\times {\mathrm{13}}^1\times {\mathrm{16921}}^1$

素因数の和:16947

約数の個数: 48

約数和(自身を含む): 59700816

約数和(自身を除く): 38583408

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 32, 39, 48, 52, 78, 96, 104, 156, 208, 312, 416, 624, 1248, 16921, 33842, 50763, 67684, 101526, 135368, 203052, 219973, 270736, 406104, 439946, 541472, 659919, 812208, 879892, 1319838, 1624416, 1759784, 2639676, 3519568, 5279352, 7039136, 10558704, 21117408]

約数ペア:

[(1, 21117408), (2, 10558704), (3, 7039136), (4, 5279352), (6, 3519568), (8, 2639676), (12, 1759784), (13, 1624416), (16, 1319838), (24, 879892), (26, 812208), (32, 659919), (39, 541472), (48, 439946), (52, 406104), (78, 270736), (96, 219973), (104, 203052), (156, 135368), (208, 101526), (312, 67684), (416, 50763), (624, 33842), (1248, 16921)]