281003840

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{2179}}^1$

素因数の和:2240

約数の個数: 112

約数和(自身を含む): 744199680

約数和(自身を除く): 463195840

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 62, 64, 65, 80, 104, 124, 130, 155, 160, 208, 248, 260, 310, 320, 403, 416, 496, 520, 620, 806, 832, 992, 1040, 1240, 1612, 1984, 2015, 2080, 2179, 2480, 3224, 4030, 4160, 4358, 4960, 6448, 8060, 8716, 9920, 10895, 12896, 16120, 17432, 21790, 25792, 28327, 32240, 34864, 43580, 56654, 64480, 67549, 69728, 87160, 113308, 128960, 135098, 139456, 141635, 174320, 226616, 270196, 283270, 337745, 348640, 453232, 540392, 566540, 675490, 697280, 878137, 906464, 1080784, 1133080, 1350980, 1756274, 1812928, 2161568, 2266160, 2701960, 3512548, 4323136, 4390685, 4532320, 5403920, 7025096, 8781370, 9064640, 10807840, 14050192, 17562740, 21615680, 28100384, 35125480, 56200768, 70250960, 140501920, 281003840]

約数ペア:

[(1, 281003840), (2, 140501920), (4, 70250960), (5, 56200768), (8, 35125480), (10, 28100384), (13, 21615680), (16, 17562740), (20, 14050192), (26, 10807840), (31, 9064640), (32, 8781370), (40, 7025096), (52, 5403920), (62, 4532320), (64, 4390685), (65, 4323136), (80, 3512548), (104, 2701960), (124, 2266160), (130, 2161568), (155, 1812928), (160, 1756274), (208, 1350980), (248, 1133080), (260, 1080784), (310, 906464), (320, 878137), (403, 697280), (416, 675490), (496, 566540), (520, 540392), (620, 453232), (806, 348640), (832, 337745), (992, 283270), (1040, 270196), (1240, 226616), (1612, 174320), (1984, 141635), (2015, 139456), (2080, 135098), (2179, 128960), (2480, 113308), (3224, 87160), (4030, 69728), (4160, 67549), (4358, 64480), (4960, 56654), (6448, 43580), (8060, 34864), (8716, 32240), (9920, 28327), (10895, 25792), (12896, 21790), (16120, 17432)]