20864178

素因数分解:

$2^1\times 3^2\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{269}}^1$

素因数の和:447

約数の個数: 48

約数和(自身を含む): 47174400

約数和(自身を除く): 26310222

約数列:

[1, 2, 3, 6, 9, 18, 31, 62, 93, 139, 186, 269, 278, 279, 417, 538, 558, 807, 834, 1251, 1614, 2421, 2502, 4309, 4842, 8339, 8618, 12927, 16678, 25017, 25854, 37391, 38781, 50034, 74782, 75051, 77562, 112173, 150102, 224346, 336519, 673038, 1159121, 2318242, 3477363, 6954726, 10432089, 20864178]

約数ペア:

[(1, 20864178), (2, 10432089), (3, 6954726), (6, 3477363), (9, 2318242), (18, 1159121), (31, 673038), (62, 336519), (93, 224346), (139, 150102), (186, 112173), (269, 77562), (278, 75051), (279, 74782), (417, 50034), (538, 38781), (558, 37391), (807, 25854), (834, 25017), (1251, 16678), (1614, 12927), (2421, 8618), (2502, 8339), (4309, 4842)]