19520305

素因数分解:

$5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{223}}^1$

素因数の和:337

約数の個数: 32

約数和(自身を含む): 27998208

約数和(自身を除く): 8477903

約数列:

[1, 5, 7, 35, 41, 61, 205, 223, 287, 305, 427, 1115, 1435, 1561, 2135, 2501, 7805, 9143, 12505, 13603, 17507, 45715, 64001, 68015, 87535, 95221, 320005, 476105, 557723, 2788615, 3904061, 19520305]

約数ペア:

[(1, 19520305), (5, 3904061), (7, 2788615), (35, 557723), (41, 476105), (61, 320005), (205, 95221), (223, 87535), (287, 68015), (305, 64001), (427, 45715), (1115, 17507), (1435, 13603), (1561, 12505), (2135, 9143), (2501, 7805)]