19898235

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{181}}^1\times {\mathrm{349}}^1$

素因数の和:548

約数の個数: 48

約数和(自身を含む): 39748800

約数和(自身を除く): 19850565

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 181, 315, 349, 543, 905, 1047, 1267, 1629, 1745, 2443, 2715, 3141, 3801, 5235, 6335, 7329, 8145, 11403, 12215, 15705, 19005, 21987, 36645, 57015, 63169, 109935, 189507, 315845, 442183, 568521, 947535, 1326549, 2210915, 2842605, 3979647, 6632745, 19898235]

約数ペア:

[(1, 19898235), (3, 6632745), (5, 3979647), (7, 2842605), (9, 2210915), (15, 1326549), (21, 947535), (35, 568521), (45, 442183), (63, 315845), (105, 189507), (181, 109935), (315, 63169), (349, 57015), (543, 36645), (905, 21987), (1047, 19005), (1267, 15705), (1629, 12215), (1745, 11403), (2443, 8145), (2715, 7329), (3141, 6335), (3801, 5235)]