21826480

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{677}}^1$

素因数の和:734

約数の個数: 80

約数和(自身を含む): 56496384

約数和(自身を除く): 34669904

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 40, 52, 62, 65, 80, 104, 124, 130, 155, 208, 248, 260, 310, 403, 496, 520, 620, 677, 806, 1040, 1240, 1354, 1612, 2015, 2480, 2708, 3224, 3385, 4030, 5416, 6448, 6770, 8060, 8801, 10832, 13540, 16120, 17602, 20987, 27080, 32240, 35204, 41974, 44005, 54160, 70408, 83948, 88010, 104935, 140816, 167896, 176020, 209870, 272831, 335792, 352040, 419740, 545662, 704080, 839480, 1091324, 1364155, 1678960, 2182648, 2728310, 4365296, 5456620, 10913240, 21826480]

約数ペア:

[(1, 21826480), (2, 10913240), (4, 5456620), (5, 4365296), (8, 2728310), (10, 2182648), (13, 1678960), (16, 1364155), (20, 1091324), (26, 839480), (31, 704080), (40, 545662), (52, 419740), (62, 352040), (65, 335792), (80, 272831), (104, 209870), (124, 176020), (130, 167896), (155, 140816), (208, 104935), (248, 88010), (260, 83948), (310, 70408), (403, 54160), (496, 44005), (520, 41974), (620, 35204), (677, 32240), (806, 27080), (1040, 20987), (1240, 17602), (1354, 16120), (1612, 13540), (2015, 10832), (2480, 8801), (2708, 8060), (3224, 6770), (3385, 6448), (4030, 5416)]