20648940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1151}}^1$

素因数の和:1199

約数の個数: 96

約数和(自身を含む): 65028096

約数和(自身を除く): 44379156

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 23, 26, 30, 39, 46, 52, 60, 65, 69, 78, 92, 115, 130, 138, 156, 195, 230, 260, 276, 299, 345, 390, 460, 598, 690, 780, 897, 1151, 1196, 1380, 1495, 1794, 2302, 2990, 3453, 3588, 4485, 4604, 5755, 5980, 6906, 8970, 11510, 13812, 14963, 17265, 17940, 23020, 26473, 29926, 34530, 44889, 52946, 59852, 69060, 74815, 79419, 89778, 105892, 132365, 149630, 158838, 179556, 224445, 264730, 299260, 317676, 344149, 397095, 448890, 529460, 688298, 794190, 897780, 1032447, 1376596, 1588380, 1720745, 2064894, 3441490, 4129788, 5162235, 6882980, 10324470, 20648940]

約数ペア:

[(1, 20648940), (2, 10324470), (3, 6882980), (4, 5162235), (5, 4129788), (6, 3441490), (10, 2064894), (12, 1720745), (13, 1588380), (15, 1376596), (20, 1032447), (23, 897780), (26, 794190), (30, 688298), (39, 529460), (46, 448890), (52, 397095), (60, 344149), (65, 317676), (69, 299260), (78, 264730), (92, 224445), (115, 179556), (130, 158838), (138, 149630), (156, 132365), (195, 105892), (230, 89778), (260, 79419), (276, 74815), (299, 69060), (345, 59852), (390, 52946), (460, 44889), (598, 34530), (690, 29926), (780, 26473), (897, 23020), (1151, 17940), (1196, 17265), (1380, 14963), (1495, 13812), (1794, 11510), (2302, 8970), (2990, 6906), (3453, 5980), (3588, 5755), (4485, 4604)]