16891240

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{101}}^1\times {\mathrm{113}}^1$

素因数の和:262

約数の個数: 64

約数和(自身を含む): 39767760

約数和(自身を除く): 22876520

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 101, 113, 148, 185, 202, 226, 296, 370, 404, 452, 505, 565, 740, 808, 904, 1010, 1130, 1480, 2020, 2260, 3737, 4040, 4181, 4520, 7474, 8362, 11413, 14948, 16724, 18685, 20905, 22826, 29896, 33448, 37370, 41810, 45652, 57065, 74740, 83620, 91304, 114130, 149480, 167240, 228260, 422281, 456520, 844562, 1689124, 2111405, 3378248, 4222810, 8445620, 16891240]

約数ペア:

[(1, 16891240), (2, 8445620), (4, 4222810), (5, 3378248), (8, 2111405), (10, 1689124), (20, 844562), (37, 456520), (40, 422281), (74, 228260), (101, 167240), (113, 149480), (148, 114130), (185, 91304), (202, 83620), (226, 74740), (296, 57065), (370, 45652), (404, 41810), (452, 37370), (505, 33448), (565, 29896), (740, 22826), (808, 20905), (904, 18685), (1010, 16724), (1130, 14948), (1480, 11413), (2020, 8362), (2260, 7474), (3737, 4520), (4040, 4181)]