21666190

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{821}}^1$

素因数の和:877

約数の個数: 64

約数和(自身を含む): 49714560

約数和(自身を除く): 28048370

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 29, 35, 58, 65, 70, 91, 130, 145, 182, 203, 290, 377, 406, 455, 754, 821, 910, 1015, 1642, 1885, 2030, 2639, 3770, 4105, 5278, 5747, 8210, 10673, 11494, 13195, 21346, 23809, 26390, 28735, 47618, 53365, 57470, 74711, 106730, 119045, 149422, 166663, 238090, 309517, 333326, 373555, 619034, 747110, 833315, 1547585, 1666630, 2166619, 3095170, 4333238, 10833095, 21666190]

約数ペア:

[(1, 21666190), (2, 10833095), (5, 4333238), (7, 3095170), (10, 2166619), (13, 1666630), (14, 1547585), (26, 833315), (29, 747110), (35, 619034), (58, 373555), (65, 333326), (70, 309517), (91, 238090), (130, 166663), (145, 149422), (182, 119045), (203, 106730), (290, 74711), (377, 57470), (406, 53365), (455, 47618), (754, 28735), (821, 26390), (910, 23809), (1015, 21346), (1642, 13195), (1885, 11494), (2030, 10673), (2639, 8210), (3770, 5747), (4105, 5278)]