20798700

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{5333}}^1$

素因数の和:5363

約数の個数: 72

約数和(自身を含む): 64818768

約数和(自身を除く): 44020068

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 25, 26, 30, 39, 50, 52, 60, 65, 75, 78, 100, 130, 150, 156, 195, 260, 300, 325, 390, 650, 780, 975, 1300, 1950, 3900, 5333, 10666, 15999, 21332, 26665, 31998, 53330, 63996, 69329, 79995, 106660, 133325, 138658, 159990, 207987, 266650, 277316, 319980, 346645, 399975, 415974, 533300, 693290, 799950, 831948, 1039935, 1386580, 1599900, 1733225, 2079870, 3466450, 4159740, 5199675, 6932900, 10399350, 20798700]

約数ペア:

[(1, 20798700), (2, 10399350), (3, 6932900), (4, 5199675), (5, 4159740), (6, 3466450), (10, 2079870), (12, 1733225), (13, 1599900), (15, 1386580), (20, 1039935), (25, 831948), (26, 799950), (30, 693290), (39, 533300), (50, 415974), (52, 399975), (60, 346645), (65, 319980), (75, 277316), (78, 266650), (100, 207987), (130, 159990), (150, 138658), (156, 133325), (195, 106660), (260, 79995), (300, 69329), (325, 63996), (390, 53330), (650, 31998), (780, 26665), (975, 21332), (1300, 15999), (1950, 10666), (3900, 5333)]