87720815

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{139}}^1$

素因数の和:256

約数の個数: 64

約数和(自身を含む): 139238400

約数和(自身を除く): 51517585

約数列:

[1, 5, 7, 13, 19, 35, 65, 73, 91, 95, 133, 139, 247, 365, 455, 511, 665, 695, 949, 973, 1235, 1387, 1729, 1807, 2555, 2641, 4745, 4865, 6643, 6935, 8645, 9035, 9709, 10147, 12649, 13205, 18031, 18487, 33215, 34333, 48545, 50735, 63245, 71029, 90155, 92435, 126217, 131911, 171665, 192793, 240331, 355145, 631085, 659555, 923377, 963965, 1201655, 1349551, 2506309, 4616885, 6747755, 12531545, 17544163, 87720815]

約数ペア:

[(1, 87720815), (5, 17544163), (7, 12531545), (13, 6747755), (19, 4616885), (35, 2506309), (65, 1349551), (73, 1201655), (91, 963965), (95, 923377), (133, 659555), (139, 631085), (247, 355145), (365, 240331), (455, 192793), (511, 171665), (665, 131911), (695, 126217), (949, 92435), (973, 90155), (1235, 71029), (1387, 63245), (1729, 50735), (1807, 48545), (2555, 34333), (2641, 33215), (4745, 18487), (4865, 18031), (6643, 13205), (6935, 12649), (8645, 10147), (9035, 9709)]