28242500

素因数分解:

$2^2\times 5^4\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1$

素因数の和:127

約数の個数: 120

約数和(自身を含む): 73476480

約数和(自身を除く): 45233980

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 25, 26, 44, 50, 52, 55, 65, 79, 100, 110, 125, 130, 143, 158, 220, 250, 260, 275, 286, 316, 325, 395, 500, 550, 572, 625, 650, 715, 790, 869, 1027, 1100, 1250, 1300, 1375, 1430, 1580, 1625, 1738, 1975, 2054, 2500, 2750, 2860, 3250, 3476, 3575, 3950, 4108, 4345, 5135, 5500, 6500, 6875, 7150, 7900, 8125, 8690, 9875, 10270, 11297, 13750, 14300, 16250, 17380, 17875, 19750, 20540, 21725, 22594, 25675, 27500, 32500, 35750, 39500, 43450, 45188, 49375, 51350, 56485, 71500, 86900, 89375, 98750, 102700, 108625, 112970, 128375, 178750, 197500, 217250, 225940, 256750, 282425, 357500, 434500, 513500, 543125, 564850, 641875, 1086250, 1129700, 1283750, 1412125, 2172500, 2567500, 2824250, 5648500, 7060625, 14121250, 28242500]

約数ペア:

[(1, 28242500), (2, 14121250), (4, 7060625), (5, 5648500), (10, 2824250), (11, 2567500), (13, 2172500), (20, 1412125), (22, 1283750), (25, 1129700), (26, 1086250), (44, 641875), (50, 564850), (52, 543125), (55, 513500), (65, 434500), (79, 357500), (100, 282425), (110, 256750), (125, 225940), (130, 217250), (143, 197500), (158, 178750), (220, 128375), (250, 112970), (260, 108625), (275, 102700), (286, 98750), (316, 89375), (325, 86900), (395, 71500), (500, 56485), (550, 51350), (572, 49375), (625, 45188), (650, 43450), (715, 39500), (790, 35750), (869, 32500), (1027, 27500), (1100, 25675), (1250, 22594), (1300, 21725), (1375, 20540), (1430, 19750), (1580, 17875), (1625, 17380), (1738, 16250), (1975, 14300), (2054, 13750), (2500, 11297), (2750, 10270), (2860, 9875), (3250, 8690), (3476, 8125), (3575, 7900), (3950, 7150), (4108, 6875), (4345, 6500), (5135, 5500)]