56857255

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1$

素因数の和:224

約数の個数: 64

約数和(自身を含む): 90316800

約数和(自身を除く): 33459545

約数列:

[1, 5, 7, 13, 29, 31, 35, 65, 91, 139, 145, 155, 203, 217, 377, 403, 455, 695, 899, 973, 1015, 1085, 1807, 1885, 2015, 2639, 2821, 4031, 4309, 4495, 4865, 6293, 9035, 11687, 12649, 13195, 14105, 20155, 21545, 28217, 30163, 31465, 52403, 56017, 58435, 63245, 81809, 124961, 141085, 150815, 262015, 280085, 366821, 392119, 409045, 624805, 874727, 1624493, 1834105, 1960595, 4373635, 8122465, 11371451, 56857255]

約数ペア:

[(1, 56857255), (5, 11371451), (7, 8122465), (13, 4373635), (29, 1960595), (31, 1834105), (35, 1624493), (65, 874727), (91, 624805), (139, 409045), (145, 392119), (155, 366821), (203, 280085), (217, 262015), (377, 150815), (403, 141085), (455, 124961), (695, 81809), (899, 63245), (973, 58435), (1015, 56017), (1085, 52403), (1807, 31465), (1885, 30163), (2015, 28217), (2639, 21545), (2821, 20155), (4031, 14105), (4309, 13195), (4495, 12649), (4865, 11687), (6293, 9035)]