181438040

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{20903}}^1$

素因数の和:20952

約数の個数: 64

約数和(自身を含む): 481628160

約数和(自身を除く): 300190120

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 56, 62, 70, 124, 140, 155, 217, 248, 280, 310, 434, 620, 868, 1085, 1240, 1736, 2170, 4340, 8680, 20903, 41806, 83612, 104515, 146321, 167224, 209030, 292642, 418060, 585284, 647993, 731605, 836120, 1170568, 1295986, 1463210, 2591972, 2926420, 3239965, 4535951, 5183944, 5852840, 6479930, 9071902, 12959860, 18143804, 22679755, 25919720, 36287608, 45359510, 90719020, 181438040]

約数ペア:

[(1, 181438040), (2, 90719020), (4, 45359510), (5, 36287608), (7, 25919720), (8, 22679755), (10, 18143804), (14, 12959860), (20, 9071902), (28, 6479930), (31, 5852840), (35, 5183944), (40, 4535951), (56, 3239965), (62, 2926420), (70, 2591972), (124, 1463210), (140, 1295986), (155, 1170568), (217, 836120), (248, 731605), (280, 647993), (310, 585284), (434, 418060), (620, 292642), (868, 209030), (1085, 167224), (1240, 146321), (1736, 104515), (2170, 83612), (4340, 41806), (8680, 20903)]