19561360

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{2687}}^1$

素因数の和:2720

約数の個数: 80

約数和(自身を含む): 55996416

約数和(自身を除く): 36435056

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 35, 40, 52, 56, 65, 70, 80, 91, 104, 112, 130, 140, 182, 208, 260, 280, 364, 455, 520, 560, 728, 910, 1040, 1456, 1820, 2687, 3640, 5374, 7280, 10748, 13435, 18809, 21496, 26870, 34931, 37618, 42992, 53740, 69862, 75236, 94045, 107480, 139724, 150472, 174655, 188090, 214960, 244517, 279448, 300944, 349310, 376180, 489034, 558896, 698620, 752360, 978068, 1222585, 1397240, 1504720, 1956136, 2445170, 2794480, 3912272, 4890340, 9780680, 19561360]

約数ペア:

[(1, 19561360), (2, 9780680), (4, 4890340), (5, 3912272), (7, 2794480), (8, 2445170), (10, 1956136), (13, 1504720), (14, 1397240), (16, 1222585), (20, 978068), (26, 752360), (28, 698620), (35, 558896), (40, 489034), (52, 376180), (56, 349310), (65, 300944), (70, 279448), (80, 244517), (91, 214960), (104, 188090), (112, 174655), (130, 150472), (140, 139724), (182, 107480), (208, 94045), (260, 75236), (280, 69862), (364, 53740), (455, 42992), (520, 37618), (560, 34931), (728, 26870), (910, 21496), (1040, 18809), (1456, 13435), (1820, 10748), (2687, 7280), (3640, 5374)]