20798520

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{5591}}^1$

素因数の和:5636

約数の個数: 64

約数和(自身を含む): 64419840

約数和(自身を除く): 43621320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 31, 40, 60, 62, 93, 120, 124, 155, 186, 248, 310, 372, 465, 620, 744, 930, 1240, 1860, 3720, 5591, 11182, 16773, 22364, 27955, 33546, 44728, 55910, 67092, 83865, 111820, 134184, 167730, 173321, 223640, 335460, 346642, 519963, 670920, 693284, 866605, 1039926, 1386568, 1733210, 2079852, 2599815, 3466420, 4159704, 5199630, 6932840, 10399260, 20798520]

約数ペア:

[(1, 20798520), (2, 10399260), (3, 6932840), (4, 5199630), (5, 4159704), (6, 3466420), (8, 2599815), (10, 2079852), (12, 1733210), (15, 1386568), (20, 1039926), (24, 866605), (30, 693284), (31, 670920), (40, 519963), (60, 346642), (62, 335460), (93, 223640), (120, 173321), (124, 167730), (155, 134184), (186, 111820), (248, 83865), (310, 67092), (372, 55910), (465, 44728), (620, 33546), (744, 27955), (930, 22364), (1240, 16773), (1860, 11182), (3720, 5591)]