20400340

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{2069}}^1$

素因数の和:2124

約数の個数: 48

約数和(自身を含む): 46947600

約数和(自身を除く): 26547260

約数列:

[1, 2, 4, 5, 10, 17, 20, 29, 34, 58, 68, 85, 116, 145, 170, 290, 340, 493, 580, 986, 1972, 2069, 2465, 4138, 4930, 8276, 9860, 10345, 20690, 35173, 41380, 60001, 70346, 120002, 140692, 175865, 240004, 300005, 351730, 600010, 703460, 1020017, 1200020, 2040034, 4080068, 5100085, 10200170, 20400340]

約数ペア:

[(1, 20400340), (2, 10200170), (4, 5100085), (5, 4080068), (10, 2040034), (17, 1200020), (20, 1020017), (29, 703460), (34, 600010), (58, 351730), (68, 300005), (85, 240004), (116, 175865), (145, 140692), (170, 120002), (290, 70346), (340, 60001), (493, 41380), (580, 35173), (986, 20690), (1972, 10345), (2069, 9860), (2465, 8276), (4138, 4930)]