19915750

素因数分解:

$2^1\times 5^3\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1$

素因数の和:154

約数の個数: 64

約数和(自身を含む): 40098240

約数和(自身を除く): 20182490

約数列:

[1, 2, 5, 10, 25, 29, 41, 50, 58, 67, 82, 125, 134, 145, 205, 250, 290, 335, 410, 670, 725, 1025, 1189, 1450, 1675, 1943, 2050, 2378, 2747, 3350, 3625, 3886, 5125, 5494, 5945, 7250, 8375, 9715, 10250, 11890, 13735, 16750, 19430, 27470, 29725, 48575, 59450, 68675, 79663, 97150, 137350, 148625, 159326, 242875, 297250, 343375, 398315, 485750, 686750, 796630, 1991575, 3983150, 9957875, 19915750]

約数ペア:

[(1, 19915750), (2, 9957875), (5, 3983150), (10, 1991575), (25, 796630), (29, 686750), (41, 485750), (50, 398315), (58, 343375), (67, 297250), (82, 242875), (125, 159326), (134, 148625), (145, 137350), (205, 97150), (250, 79663), (290, 68675), (335, 59450), (410, 48575), (670, 29725), (725, 27470), (1025, 19430), (1189, 16750), (1450, 13735), (1675, 11890), (1943, 10250), (2050, 9715), (2378, 8375), (2747, 7250), (3350, 5945), (3625, 5494), (3886, 5125)]