19620975

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{1399}}^1$

素因数の和:1440

約数の個数: 48

約数和(自身を含む): 37497600

約数和(自身を除く): 17876625

約数列:

[1, 3, 5, 11, 15, 17, 25, 33, 51, 55, 75, 85, 165, 187, 255, 275, 425, 561, 825, 935, 1275, 1399, 2805, 4197, 4675, 6995, 14025, 15389, 20985, 23783, 34975, 46167, 71349, 76945, 104925, 118915, 230835, 261613, 356745, 384725, 594575, 784839, 1154175, 1308065, 1783725, 3924195, 6540325, 19620975]

約数ペア:

[(1, 19620975), (3, 6540325), (5, 3924195), (11, 1783725), (15, 1308065), (17, 1154175), (25, 784839), (33, 594575), (51, 384725), (55, 356745), (75, 261613), (85, 230835), (165, 118915), (187, 104925), (255, 76945), (275, 71349), (425, 46167), (561, 34975), (825, 23783), (935, 20985), (1275, 15389), (1399, 14025), (2805, 6995), (4197, 4675)]