19935240

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{983}}^1$

素因数の和:1023

約数の個数: 96

約数和(自身を含む): 64825920

約数和(自身を除く): 44890680

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 169, 195, 260, 312, 338, 390, 507, 520, 676, 780, 845, 983, 1014, 1352, 1560, 1690, 1966, 2028, 2535, 2949, 3380, 3932, 4056, 4915, 5070, 5898, 6760, 7864, 9830, 10140, 11796, 12779, 14745, 19660, 20280, 23592, 25558, 29490, 38337, 39320, 51116, 58980, 63895, 76674, 102232, 117960, 127790, 153348, 166127, 191685, 255580, 306696, 332254, 383370, 498381, 511160, 664508, 766740, 830635, 996762, 1329016, 1533480, 1661270, 1993524, 2491905, 3322540, 3987048, 4983810, 6645080, 9967620, 19935240]

約数ペア:

[(1, 19935240), (2, 9967620), (3, 6645080), (4, 4983810), (5, 3987048), (6, 3322540), (8, 2491905), (10, 1993524), (12, 1661270), (13, 1533480), (15, 1329016), (20, 996762), (24, 830635), (26, 766740), (30, 664508), (39, 511160), (40, 498381), (52, 383370), (60, 332254), (65, 306696), (78, 255580), (104, 191685), (120, 166127), (130, 153348), (156, 127790), (169, 117960), (195, 102232), (260, 76674), (312, 63895), (338, 58980), (390, 51116), (507, 39320), (520, 38337), (676, 29490), (780, 25558), (845, 23592), (983, 20280), (1014, 19660), (1352, 14745), (1560, 12779), (1690, 11796), (1966, 10140), (2028, 9830), (2535, 7864), (2949, 6760), (3380, 5898), (3932, 5070), (4056, 4915)]