20176455740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{223}}^1\times {\mathrm{646267}}^1$

素因数の和:646506

約数の個数: 48

約数和(自身を含む): 48640714752

約数和(自身を除く): 28464259012

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 223, 446, 892, 1115, 1561, 2230, 3122, 4460, 6244, 7805, 15610, 31220, 646267, 1292534, 2585068, 3231335, 4523869, 6462670, 9047738, 12925340, 18095476, 22619345, 45238690, 90477380, 144117541, 288235082, 576470164, 720587705, 1008822787, 1441175410, 2017645574, 2882350820, 4035291148, 5044113935, 10088227870, 20176455740]

約数ペア:

[(1, 20176455740), (2, 10088227870), (4, 5044113935), (5, 4035291148), (7, 2882350820), (10, 2017645574), (14, 1441175410), (20, 1008822787), (28, 720587705), (35, 576470164), (70, 288235082), (140, 144117541), (223, 90477380), (446, 45238690), (892, 22619345), (1115, 18095476), (1561, 12925340), (2230, 9047738), (3122, 6462670), (4460, 4523869), (6244, 3231335), (7805, 2585068), (15610, 1292534), (31220, 646267)]