19856655

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{373}}^1$

素因数の和:417

約数の個数: 72

約数和(自身を含む): 42707808

約数和(自身を除く): 22851153

約数列:

[1, 3, 5, 7, 9, 13, 15, 21, 35, 39, 45, 63, 65, 91, 105, 117, 169, 195, 273, 315, 373, 455, 507, 585, 819, 845, 1119, 1183, 1365, 1521, 1865, 2535, 2611, 3357, 3549, 4095, 4849, 5595, 5915, 7605, 7833, 10647, 13055, 14547, 16785, 17745, 23499, 24245, 33943, 39165, 43641, 53235, 63037, 72735, 101829, 117495, 169715, 189111, 218205, 305487, 315185, 441259, 509145, 567333, 945555, 1323777, 1527435, 2206295, 2836665, 3971331, 6618885, 19856655]

約数ペア:

[(1, 19856655), (3, 6618885), (5, 3971331), (7, 2836665), (9, 2206295), (13, 1527435), (15, 1323777), (21, 945555), (35, 567333), (39, 509145), (45, 441259), (63, 315185), (65, 305487), (91, 218205), (105, 189111), (117, 169715), (169, 117495), (195, 101829), (273, 72735), (315, 63037), (373, 53235), (455, 43641), (507, 39165), (585, 33943), (819, 24245), (845, 23499), (1119, 17745), (1183, 16785), (1365, 14547), (1521, 13055), (1865, 10647), (2535, 7833), (2611, 7605), (3357, 5915), (3549, 5595), (4095, 4849)]