19890585

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{281}}^1$

素因数の和:327

約数の個数: 72

約数和(自身を含む): 40956552

約数和(自身を除く): 21065967

約数列:

[1, 3, 5, 9, 11, 13, 15, 33, 39, 45, 55, 65, 99, 117, 121, 143, 165, 195, 281, 363, 429, 495, 585, 605, 715, 843, 1089, 1287, 1405, 1573, 1815, 2145, 2529, 3091, 3653, 4215, 4719, 5445, 6435, 7865, 9273, 10959, 12645, 14157, 15455, 18265, 23595, 27819, 32877, 34001, 40183, 46365, 54795, 70785, 102003, 120549, 139095, 164385, 170005, 200915, 306009, 361647, 442013, 510015, 602745, 1326039, 1530045, 1808235, 2210065, 3978117, 6630195, 19890585]

約数ペア:

[(1, 19890585), (3, 6630195), (5, 3978117), (9, 2210065), (11, 1808235), (13, 1530045), (15, 1326039), (33, 602745), (39, 510015), (45, 442013), (55, 361647), (65, 306009), (99, 200915), (117, 170005), (121, 164385), (143, 139095), (165, 120549), (195, 102003), (281, 70785), (363, 54795), (429, 46365), (495, 40183), (585, 34001), (605, 32877), (715, 27819), (843, 23595), (1089, 18265), (1287, 15455), (1405, 14157), (1573, 12645), (1815, 10959), (2145, 9273), (2529, 7865), (3091, 6435), (3653, 5445), (4215, 4719)]