281100560

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{8719}}^1$

素因数の和:8776

約数の個数: 80

約数和(自身を含む): 726620160

約数和(自身を除く): 445519600

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, 806, 1040, 1240, 1612, 2015, 2480, 3224, 4030, 6448, 8060, 8719, 16120, 17438, 32240, 34876, 43595, 69752, 87190, 113347, 139504, 174380, 226694, 270289, 348760, 453388, 540578, 566735, 697520, 906776, 1081156, 1133470, 1351445, 1813552, 2162312, 2266940, 2702890, 3513757, 4324624, 4533880, 5405780, 7027514, 9067760, 10811560, 14055028, 17568785, 21623120, 28110056, 35137570, 56220112, 70275140, 140550280, 281100560]

約数ペア:

[(1, 281100560), (2, 140550280), (4, 70275140), (5, 56220112), (8, 35137570), (10, 28110056), (13, 21623120), (16, 17568785), (20, 14055028), (26, 10811560), (31, 9067760), (40, 7027514), (52, 5405780), (62, 4533880), (65, 4324624), (80, 3513757), (104, 2702890), (124, 2266940), (130, 2162312), (155, 1813552), (208, 1351445), (248, 1133470), (260, 1081156), (310, 906776), (403, 697520), (496, 566735), (520, 540578), (620, 453388), (806, 348760), (1040, 270289), (1240, 226694), (1612, 174380), (2015, 139504), (2480, 113347), (3224, 87190), (4030, 69752), (6448, 43595), (8060, 34876), (8719, 32240), (16120, 17438)]