19818840

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{317}}^1\times {\mathrm{521}}^1$

素因数の和:852

約数の個数: 64

約数和(自身を含む): 59758560

約数和(自身を除く): 39939720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 317, 521, 634, 951, 1042, 1268, 1563, 1585, 1902, 2084, 2536, 2605, 3126, 3170, 3804, 4168, 4755, 5210, 6252, 6340, 7608, 7815, 9510, 10420, 12504, 12680, 15630, 19020, 20840, 31260, 38040, 62520, 165157, 330314, 495471, 660628, 825785, 990942, 1321256, 1651570, 1981884, 2477355, 3303140, 3963768, 4954710, 6606280, 9909420, 19818840]

約数ペア:

[(1, 19818840), (2, 9909420), (3, 6606280), (4, 4954710), (5, 3963768), (6, 3303140), (8, 2477355), (10, 1981884), (12, 1651570), (15, 1321256), (20, 990942), (24, 825785), (30, 660628), (40, 495471), (60, 330314), (120, 165157), (317, 62520), (521, 38040), (634, 31260), (951, 20840), (1042, 19020), (1268, 15630), (1563, 12680), (1585, 12504), (1902, 10420), (2084, 9510), (2536, 7815), (2605, 7608), (3126, 6340), (3170, 6252), (3804, 5210), (4168, 4755)]