19871865

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^3\times {\mathrm{67}}^1$

素因数の和:120

約数の個数: 64

約数和(自身を含む): 38841600

約数和(自身を除く): 18969735

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 65, 67, 117, 135, 169, 195, 201, 335, 351, 507, 585, 603, 845, 871, 1005, 1521, 1755, 1809, 2197, 2535, 2613, 3015, 4355, 4563, 6591, 7605, 7839, 9045, 10985, 11323, 13065, 19773, 22815, 23517, 32955, 33969, 39195, 56615, 59319, 98865, 101907, 117585, 147199, 169845, 296595, 305721, 441597, 509535, 735995, 1324791, 1528605, 2207985, 3974373, 6623955, 19871865]

約数ペア:

[(1, 19871865), (3, 6623955), (5, 3974373), (9, 2207985), (13, 1528605), (15, 1324791), (27, 735995), (39, 509535), (45, 441597), (65, 305721), (67, 296595), (117, 169845), (135, 147199), (169, 117585), (195, 101907), (201, 98865), (335, 59319), (351, 56615), (507, 39195), (585, 33969), (603, 32955), (845, 23517), (871, 22815), (1005, 19773), (1521, 13065), (1755, 11323), (1809, 10985), (2197, 9045), (2535, 7839), (2613, 7605), (3015, 6591), (4355, 4563)]