156780020

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{13309}}^1$

素因数の和:13368

約数の個数: 48

約数和(自身を含む): 357772800

約数和(自身を除く): 200992780

約数列:

[1, 2, 4, 5, 10, 19, 20, 31, 38, 62, 76, 95, 124, 155, 190, 310, 380, 589, 620, 1178, 2356, 2945, 5890, 11780, 13309, 26618, 53236, 66545, 133090, 252871, 266180, 412579, 505742, 825158, 1011484, 1264355, 1650316, 2062895, 2528710, 4125790, 5057420, 7839001, 8251580, 15678002, 31356004, 39195005, 78390010, 156780020]

約数ペア:

[(1, 156780020), (2, 78390010), (4, 39195005), (5, 31356004), (10, 15678002), (19, 8251580), (20, 7839001), (31, 5057420), (38, 4125790), (62, 2528710), (76, 2062895), (95, 1650316), (124, 1264355), (155, 1011484), (190, 825158), (310, 505742), (380, 412579), (589, 266180), (620, 252871), (1178, 133090), (2356, 66545), (2945, 53236), (5890, 26618), (11780, 13309)]