19345235

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1$

素因数の和:144

約数の個数: 64

約数和(自身を含む): 31497984

約数和(自身を除く): 12152749

約数列:

[1, 5, 7, 13, 17, 35, 41, 61, 65, 85, 91, 119, 205, 221, 287, 305, 427, 455, 533, 595, 697, 793, 1037, 1105, 1435, 1547, 2135, 2501, 2665, 3485, 3731, 3965, 4879, 5185, 5551, 7259, 7735, 9061, 12505, 13481, 17507, 18655, 24395, 27755, 32513, 36295, 42517, 45305, 63427, 67405, 87535, 94367, 162565, 212585, 227591, 297619, 317135, 471835, 552721, 1137955, 1488095, 2763605, 3869047, 19345235]

約数ペア:

[(1, 19345235), (5, 3869047), (7, 2763605), (13, 1488095), (17, 1137955), (35, 552721), (41, 471835), (61, 317135), (65, 297619), (85, 227591), (91, 212585), (119, 162565), (205, 94367), (221, 87535), (287, 67405), (305, 63427), (427, 45305), (455, 42517), (533, 36295), (595, 32513), (697, 27755), (793, 24395), (1037, 18655), (1105, 17507), (1435, 13481), (1547, 12505), (2135, 9061), (2501, 7735), (2665, 7259), (3485, 5551), (3731, 5185), (3965, 4879)]