21397560

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{617}}^1$

素因数の和:665

約数の個数: 96

約数和(自身を含む): 68301360

約数和(自身を除く): 46903800

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 24, 30, 34, 40, 51, 60, 68, 85, 102, 120, 136, 170, 204, 255, 289, 340, 408, 510, 578, 617, 680, 867, 1020, 1156, 1234, 1445, 1734, 1851, 2040, 2312, 2468, 2890, 3085, 3468, 3702, 4335, 4936, 5780, 6170, 6936, 7404, 8670, 9255, 10489, 11560, 12340, 14808, 17340, 18510, 20978, 24680, 31467, 34680, 37020, 41956, 52445, 62934, 74040, 83912, 104890, 125868, 157335, 178313, 209780, 251736, 314670, 356626, 419560, 534939, 629340, 713252, 891565, 1069878, 1258680, 1426504, 1783130, 2139756, 2674695, 3566260, 4279512, 5349390, 7132520, 10698780, 21397560]

約数ペア:

[(1, 21397560), (2, 10698780), (3, 7132520), (4, 5349390), (5, 4279512), (6, 3566260), (8, 2674695), (10, 2139756), (12, 1783130), (15, 1426504), (17, 1258680), (20, 1069878), (24, 891565), (30, 713252), (34, 629340), (40, 534939), (51, 419560), (60, 356626), (68, 314670), (85, 251736), (102, 209780), (120, 178313), (136, 157335), (170, 125868), (204, 104890), (255, 83912), (289, 74040), (340, 62934), (408, 52445), (510, 41956), (578, 37020), (617, 34680), (680, 31467), (867, 24680), (1020, 20978), (1156, 18510), (1234, 17340), (1445, 14808), (1734, 12340), (1851, 11560), (2040, 10489), (2312, 9255), (2468, 8670), (2890, 7404), (3085, 6936), (3468, 6170), (3702, 5780), (4335, 4936)]