19218915

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{599}}^1$

素因数の和:664

約数の個数: 48

約数和(自身を含む): 35942400

約数和(自身を除く): 16723485

約数列:

[1, 3, 5, 9, 15, 23, 31, 45, 69, 93, 115, 155, 207, 279, 345, 465, 599, 713, 1035, 1395, 1797, 2139, 2995, 3565, 5391, 6417, 8985, 10695, 13777, 18569, 26955, 32085, 41331, 55707, 68885, 92845, 123993, 167121, 206655, 278535, 427087, 619965, 835605, 1281261, 2135435, 3843783, 6406305, 19218915]

約数ペア:

[(1, 19218915), (3, 6406305), (5, 3843783), (9, 2135435), (15, 1281261), (23, 835605), (31, 619965), (45, 427087), (69, 278535), (93, 206655), (115, 167121), (155, 123993), (207, 92845), (279, 68885), (345, 55707), (465, 41331), (599, 32085), (713, 26955), (1035, 18569), (1395, 13777), (1797, 10695), (2139, 8985), (2995, 6417), (3565, 5391)]