21807260

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{2069}}^1$

素因数の和:2126

約数の個数: 48

約数和(自身を含む): 50077440

約数和(自身を除く): 28270180

約数列:

[1, 2, 4, 5, 10, 17, 20, 31, 34, 62, 68, 85, 124, 155, 170, 310, 340, 527, 620, 1054, 2069, 2108, 2635, 4138, 5270, 8276, 10345, 10540, 20690, 35173, 41380, 64139, 70346, 128278, 140692, 175865, 256556, 320695, 351730, 641390, 703460, 1090363, 1282780, 2180726, 4361452, 5451815, 10903630, 21807260]

約数ペア:

[(1, 21807260), (2, 10903630), (4, 5451815), (5, 4361452), (10, 2180726), (17, 1282780), (20, 1090363), (31, 703460), (34, 641390), (62, 351730), (68, 320695), (85, 256556), (124, 175865), (155, 140692), (170, 128278), (310, 70346), (340, 64139), (527, 41380), (620, 35173), (1054, 20690), (2069, 10540), (2108, 10345), (2635, 8276), (4138, 5270)]