2157975

素因数分解:

$3^3\times 5^2\times {\mathrm{23}}^1\times {\mathrm{139}}^1$

素因数の和:181

約数の個数: 48

約数和(自身を含む): 4166400

約数和(自身を除く): 2008425

約数列:

[1, 3, 5, 9, 15, 23, 25, 27, 45, 69, 75, 115, 135, 139, 207, 225, 345, 417, 575, 621, 675, 695, 1035, 1251, 1725, 2085, 3105, 3197, 3475, 3753, 5175, 6255, 9591, 10425, 15525, 15985, 18765, 28773, 31275, 47955, 79925, 86319, 93825, 143865, 239775, 431595, 719325, 2157975]

約数ペア:

[(1, 2157975), (3, 719325), (5, 431595), (9, 239775), (15, 143865), (23, 93825), (25, 86319), (27, 79925), (45, 47955), (69, 31275), (75, 28773), (115, 18765), (135, 15985), (139, 15525), (207, 10425), (225, 9591), (345, 6255), (417, 5175), (575, 3753), (621, 3475), (675, 3197), (695, 3105), (1035, 2085), (1251, 1725)]