221281520

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^3\times {\mathrm{563}}^1$

素因数の和:627

約数の個数: 80

約数和(自身を含む): 547598880

約数和(自身を除く): 326317360

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 289, 340, 563, 578, 680, 1126, 1156, 1360, 1445, 2252, 2312, 2815, 2890, 4504, 4624, 4913, 5630, 5780, 9008, 9571, 9826, 11260, 11560, 19142, 19652, 22520, 23120, 24565, 38284, 39304, 45040, 47855, 49130, 76568, 78608, 95710, 98260, 153136, 162707, 191420, 196520, 325414, 382840, 393040, 650828, 765680, 813535, 1301656, 1627070, 2603312, 2766019, 3254140, 5532038, 6508280, 11064076, 13016560, 13830095, 22128152, 27660190, 44256304, 55320380, 110640760, 221281520]

約数ペア:

[(1, 221281520), (2, 110640760), (4, 55320380), (5, 44256304), (8, 27660190), (10, 22128152), (16, 13830095), (17, 13016560), (20, 11064076), (34, 6508280), (40, 5532038), (68, 3254140), (80, 2766019), (85, 2603312), (136, 1627070), (170, 1301656), (272, 813535), (289, 765680), (340, 650828), (563, 393040), (578, 382840), (680, 325414), (1126, 196520), (1156, 191420), (1360, 162707), (1445, 153136), (2252, 98260), (2312, 95710), (2815, 78608), (2890, 76568), (4504, 49130), (4624, 47855), (4913, 45040), (5630, 39304), (5780, 38284), (9008, 24565), (9571, 23120), (9826, 22520), (11260, 19652), (11560, 19142)]