838240

素因数分解:

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

素因数の和:72

約数の個数: 72

約数和(自身を含む): 2213568

約数和(自身を除く): 1375328

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 62, 65, 80, 104, 124, 130, 155, 160, 169, 208, 248, 260, 310, 338, 403, 416, 496, 520, 620, 676, 806, 845, 992, 1040, 1240, 1352, 1612, 1690, 2015, 2080, 2480, 2704, 3224, 3380, 4030, 4960, 5239, 5408, 6448, 6760, 8060, 10478, 12896, 13520, 16120, 20956, 26195, 27040, 32240, 41912, 52390, 64480, 83824, 104780, 167648, 209560, 419120, 838240]

約数ペア:

[(1, 838240), (2, 419120), (4, 209560), (5, 167648), (8, 104780), (10, 83824), (13, 64480), (16, 52390), (20, 41912), (26, 32240), (31, 27040), (32, 26195), (40, 20956), (52, 16120), (62, 13520), (65, 12896), (80, 10478), (104, 8060), (124, 6760), (130, 6448), (155, 5408), (160, 5239), (169, 4960), (208, 4030), (248, 3380), (260, 3224), (310, 2704), (338, 2480), (403, 2080), (416, 2015), (496, 1690), (520, 1612), (620, 1352), (676, 1240), (806, 1040), (845, 992)]