19972215

素因数分解:

$3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{103}}^1\times {\mathrm{139}}^1$

素因数の和:284

約数の個数: 48

約数和(自身を含む): 36341760

約数和(自身を除く): 16369545

約数列:

[1, 3, 5, 9, 15, 31, 45, 93, 103, 139, 155, 279, 309, 417, 465, 515, 695, 927, 1251, 1395, 1545, 2085, 3193, 4309, 4635, 6255, 9579, 12927, 14317, 15965, 21545, 28737, 38781, 42951, 47895, 64635, 71585, 128853, 143685, 193905, 214755, 443827, 644265, 1331481, 2219135, 3994443, 6657405, 19972215]

約数ペア:

[(1, 19972215), (3, 6657405), (5, 3994443), (9, 2219135), (15, 1331481), (31, 644265), (45, 443827), (93, 214755), (103, 193905), (139, 143685), (155, 128853), (279, 71585), (309, 64635), (417, 47895), (465, 42951), (515, 38781), (695, 28737), (927, 21545), (1251, 15965), (1395, 14317), (1545, 12927), (2085, 9579), (3193, 6255), (4309, 4635)]