21000921630

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{330359}}^1$

素因数の和:330545

約数の個数: 64

約数和(自身を含む): 54612472320

約数和(自身を除く): 33611550690

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 163, 195, 326, 390, 489, 815, 978, 1630, 2119, 2445, 4238, 4890, 6357, 10595, 12714, 21190, 31785, 63570, 330359, 660718, 991077, 1651795, 1982154, 3303590, 4294667, 4955385, 8589334, 9910770, 12884001, 21473335, 25768002, 42946670, 53848517, 64420005, 107697034, 128840010, 161545551, 269242585, 323091102, 538485170, 700030721, 807727755, 1400061442, 1615455510, 2100092163, 3500153605, 4200184326, 7000307210, 10500460815, 21000921630]

約数ペア:

[(1, 21000921630), (2, 10500460815), (3, 7000307210), (5, 4200184326), (6, 3500153605), (10, 2100092163), (13, 1615455510), (15, 1400061442), (26, 807727755), (30, 700030721), (39, 538485170), (65, 323091102), (78, 269242585), (130, 161545551), (163, 128840010), (195, 107697034), (326, 64420005), (390, 53848517), (489, 42946670), (815, 25768002), (978, 21473335), (1630, 12884001), (2119, 9910770), (2445, 8589334), (4238, 4955385), (4890, 4294667), (6357, 3303590), (10595, 1982154), (12714, 1651795), (21190, 991077), (31785, 660718), (63570, 330359)]