19975275

素因数分解:

$3^3\times 5^2\times {\mathrm{101}}^1\times {\mathrm{293}}^1$

素因数の和:413

約数の個数: 48

約数和(自身を含む): 37185120

約数和(自身を除く): 17209845

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 101, 135, 225, 293, 303, 505, 675, 879, 909, 1465, 1515, 2525, 2637, 2727, 4395, 4545, 7325, 7575, 7911, 13185, 13635, 21975, 22725, 29593, 39555, 65925, 68175, 88779, 147965, 197775, 266337, 443895, 739825, 799011, 1331685, 2219475, 3995055, 6658425, 19975275]

約数ペア:

[(1, 19975275), (3, 6658425), (5, 3995055), (9, 2219475), (15, 1331685), (25, 799011), (27, 739825), (45, 443895), (75, 266337), (101, 197775), (135, 147965), (225, 88779), (293, 68175), (303, 65925), (505, 39555), (675, 29593), (879, 22725), (909, 21975), (1465, 13635), (1515, 13185), (2525, 7911), (2637, 7575), (2727, 7325), (4395, 4545)]