21310250

素因数分解:

$2^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{83}}^1$

素因数の和:192

約数の個数: 64

約数和(自身を含む): 44029440

約数和(自身を除く): 22719190

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 79, 83, 125, 130, 158, 166, 250, 325, 395, 415, 650, 790, 830, 1027, 1079, 1625, 1975, 2054, 2075, 2158, 3250, 3950, 4150, 5135, 5395, 6557, 9875, 10270, 10375, 10790, 13114, 19750, 20750, 25675, 26975, 32785, 51350, 53950, 65570, 85241, 128375, 134875, 163925, 170482, 256750, 269750, 327850, 426205, 819625, 852410, 1639250, 2131025, 4262050, 10655125, 21310250]

約数ペア:

[(1, 21310250), (2, 10655125), (5, 4262050), (10, 2131025), (13, 1639250), (25, 852410), (26, 819625), (50, 426205), (65, 327850), (79, 269750), (83, 256750), (125, 170482), (130, 163925), (158, 134875), (166, 128375), (250, 85241), (325, 65570), (395, 53950), (415, 51350), (650, 32785), (790, 26975), (830, 25675), (1027, 20750), (1079, 19750), (1625, 13114), (1975, 10790), (2054, 10375), (2075, 10270), (2158, 9875), (3250, 6557), (3950, 5395), (4150, 5135)]