20389140

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{227}}^1\times {\mathrm{499}}^1$

素因数の和:741

約数の個数: 72

約数和(自身を含む): 62244000

約数和(自身を除く): 41854860

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 227, 454, 499, 681, 908, 998, 1135, 1362, 1497, 1996, 2043, 2270, 2495, 2724, 2994, 3405, 4086, 4491, 4540, 4990, 5988, 6810, 7485, 8172, 8982, 9980, 10215, 13620, 14970, 17964, 20430, 22455, 29940, 40860, 44910, 89820, 113273, 226546, 339819, 453092, 566365, 679638, 1019457, 1132730, 1359276, 1699095, 2038914, 2265460, 3398190, 4077828, 5097285, 6796380, 10194570, 20389140]

約数ペア:

[(1, 20389140), (2, 10194570), (3, 6796380), (4, 5097285), (5, 4077828), (6, 3398190), (9, 2265460), (10, 2038914), (12, 1699095), (15, 1359276), (18, 1132730), (20, 1019457), (30, 679638), (36, 566365), (45, 453092), (60, 339819), (90, 226546), (180, 113273), (227, 89820), (454, 44910), (499, 40860), (681, 29940), (908, 22455), (998, 20430), (1135, 17964), (1362, 14970), (1497, 13620), (1996, 10215), (2043, 9980), (2270, 8982), (2495, 8172), (2724, 7485), (2994, 6810), (3405, 5988), (4086, 4990), (4491, 4540)]