20589255

素因数分解:

$3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{349}}^1$

素因数の和:405

約数の個数: 64

約数和(自身を含む): 40320000

約数和(自身を除く): 19730745

約数列:

[1, 3, 5, 9, 15, 19, 23, 27, 45, 57, 69, 95, 115, 135, 171, 207, 285, 345, 349, 437, 513, 621, 855, 1035, 1047, 1311, 1745, 2185, 2565, 3105, 3141, 3933, 5235, 6555, 6631, 8027, 9423, 11799, 15705, 19665, 19893, 24081, 33155, 40135, 47115, 58995, 59679, 72243, 99465, 120405, 152513, 179037, 216729, 298395, 361215, 457539, 762565, 895185, 1083645, 1372617, 2287695, 4117851, 6863085, 20589255]

約数ペア:

[(1, 20589255), (3, 6863085), (5, 4117851), (9, 2287695), (15, 1372617), (19, 1083645), (23, 895185), (27, 762565), (45, 457539), (57, 361215), (69, 298395), (95, 216729), (115, 179037), (135, 152513), (171, 120405), (207, 99465), (285, 72243), (345, 59679), (349, 58995), (437, 47115), (513, 40135), (621, 33155), (855, 24081), (1035, 19893), (1047, 19665), (1311, 15705), (1745, 11799), (2185, 9423), (2565, 8027), (3105, 6631), (3141, 6555), (3933, 5235)]