21604725

素因数分解:

$3^4\times 5^2\times {\mathrm{47}}^1\times {\mathrm{227}}^1$

素因数の和:296

約数の個数: 60

約数和(自身を含む): 41050944

約数和(自身を除く): 19446219

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 47, 75, 81, 135, 141, 225, 227, 235, 405, 423, 675, 681, 705, 1135, 1175, 1269, 2025, 2043, 2115, 3405, 3525, 3807, 5675, 6129, 6345, 10215, 10575, 10669, 17025, 18387, 19035, 30645, 31725, 32007, 51075, 53345, 91935, 95175, 96021, 153225, 160035, 266725, 288063, 459675, 480105, 800175, 864189, 1440315, 2400525, 4320945, 7201575, 21604725]

約数ペア:

[(1, 21604725), (3, 7201575), (5, 4320945), (9, 2400525), (15, 1440315), (25, 864189), (27, 800175), (45, 480105), (47, 459675), (75, 288063), (81, 266725), (135, 160035), (141, 153225), (225, 96021), (227, 95175), (235, 91935), (405, 53345), (423, 51075), (675, 32007), (681, 31725), (705, 30645), (1135, 19035), (1175, 18387), (1269, 17025), (2025, 10669), (2043, 10575), (2115, 10215), (3405, 6345), (3525, 6129), (3807, 5675)]