21519270

素因数分解:

$2^1\times 3^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{857}}^1$

素因数の和:907

約数の個数: 80

約数和(自身を含む): 59799168

約数和(自身を除く): 38279898

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 31, 45, 54, 62, 81, 90, 93, 135, 155, 162, 186, 270, 279, 310, 405, 465, 558, 810, 837, 857, 930, 1395, 1674, 1714, 2511, 2571, 2790, 4185, 4285, 5022, 5142, 7713, 8370, 8570, 12555, 12855, 15426, 23139, 25110, 25710, 26567, 38565, 46278, 53134, 69417, 77130, 79701, 115695, 132835, 138834, 159402, 231390, 239103, 265670, 347085, 398505, 478206, 694170, 717309, 797010, 1195515, 1434618, 2151927, 2391030, 3586545, 4303854, 7173090, 10759635, 21519270]

約数ペア:

[(1, 21519270), (2, 10759635), (3, 7173090), (5, 4303854), (6, 3586545), (9, 2391030), (10, 2151927), (15, 1434618), (18, 1195515), (27, 797010), (30, 717309), (31, 694170), (45, 478206), (54, 398505), (62, 347085), (81, 265670), (90, 239103), (93, 231390), (135, 159402), (155, 138834), (162, 132835), (186, 115695), (270, 79701), (279, 77130), (310, 69417), (405, 53134), (465, 46278), (558, 38565), (810, 26567), (837, 25710), (857, 25110), (930, 23139), (1395, 15426), (1674, 12855), (1714, 12555), (2511, 8570), (2571, 8370), (2790, 7713), (4185, 5142), (4285, 5022)]