20776975

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1$

素因数の和:160

約数の個数: 48

約数和(自身を含む): 29998080

約数和(自身を除く): 9221105

約数列:

[1, 5, 17, 19, 25, 31, 83, 85, 95, 155, 323, 415, 425, 475, 527, 589, 775, 1411, 1577, 1615, 2075, 2573, 2635, 2945, 7055, 7885, 8075, 10013, 12865, 13175, 14725, 26809, 35275, 39425, 43741, 48887, 50065, 64325, 134045, 218705, 244435, 250325, 670225, 831079, 1093525, 1222175, 4155395, 20776975]

約数ペア:

[(1, 20776975), (5, 4155395), (17, 1222175), (19, 1093525), (25, 831079), (31, 670225), (83, 250325), (85, 244435), (95, 218705), (155, 134045), (323, 64325), (415, 50065), (425, 48887), (475, 43741), (527, 39425), (589, 35275), (775, 26809), (1411, 14725), (1577, 13175), (1615, 12865), (2075, 10013), (2573, 8075), (2635, 7885), (2945, 7055)]