21807420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{83}}^1\times {\mathrm{151}}^1$

素因数の和:275

約数の個数: 96

約数和(自身を含む): 64350720

約数和(自身を除く): 42543300

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 29, 30, 58, 60, 83, 87, 116, 145, 151, 166, 174, 249, 290, 302, 332, 348, 415, 435, 453, 498, 580, 604, 755, 830, 870, 906, 996, 1245, 1510, 1660, 1740, 1812, 2265, 2407, 2490, 3020, 4379, 4530, 4814, 4980, 7221, 8758, 9060, 9628, 12035, 12533, 13137, 14442, 17516, 21895, 24070, 25066, 26274, 28884, 36105, 37599, 43790, 48140, 50132, 52548, 62665, 65685, 72210, 75198, 87580, 125330, 131370, 144420, 150396, 187995, 250660, 262740, 363457, 375990, 726914, 751980, 1090371, 1453828, 1817285, 2180742, 3634570, 4361484, 5451855, 7269140, 10903710, 21807420]

約数ペア:

[(1, 21807420), (2, 10903710), (3, 7269140), (4, 5451855), (5, 4361484), (6, 3634570), (10, 2180742), (12, 1817285), (15, 1453828), (20, 1090371), (29, 751980), (30, 726914), (58, 375990), (60, 363457), (83, 262740), (87, 250660), (116, 187995), (145, 150396), (151, 144420), (166, 131370), (174, 125330), (249, 87580), (290, 75198), (302, 72210), (332, 65685), (348, 62665), (415, 52548), (435, 50132), (453, 48140), (498, 43790), (580, 37599), (604, 36105), (755, 28884), (830, 26274), (870, 25066), (906, 24070), (996, 21895), (1245, 17516), (1510, 14442), (1660, 13137), (1740, 12533), (1812, 12035), (2265, 9628), (2407, 9060), (2490, 8758), (3020, 7221), (4379, 4980), (4530, 4814)]