19587880

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{271}}^1$

素因数の和:434

約数の個数: 64

約数和(自身を含む): 47980800

約数和(自身を除く): 28392920

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 139, 260, 271, 278, 520, 542, 556, 695, 1084, 1112, 1355, 1390, 1807, 2168, 2710, 2780, 3523, 3614, 5420, 5560, 7046, 7228, 9035, 10840, 14092, 14456, 17615, 18070, 28184, 35230, 36140, 37669, 70460, 72280, 75338, 140920, 150676, 188345, 301352, 376690, 489697, 753380, 979394, 1506760, 1958788, 2448485, 3917576, 4896970, 9793940, 19587880]

約数ペア:

[(1, 19587880), (2, 9793940), (4, 4896970), (5, 3917576), (8, 2448485), (10, 1958788), (13, 1506760), (20, 979394), (26, 753380), (40, 489697), (52, 376690), (65, 301352), (104, 188345), (130, 150676), (139, 140920), (260, 75338), (271, 72280), (278, 70460), (520, 37669), (542, 36140), (556, 35230), (695, 28184), (1084, 18070), (1112, 17615), (1355, 14456), (1390, 14092), (1807, 10840), (2168, 9035), (2710, 7228), (2780, 7046), (3523, 5560), (3614, 5420)]