638462760

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{409271}}^1$

素因数の和:409298

約数の個数: 64

約数和(自身を含む): 2062730880

約数和(自身を除く): 1424268120

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 195, 260, 312, 390, 520, 780, 1560, 409271, 818542, 1227813, 1637084, 2046355, 2455626, 3274168, 4092710, 4911252, 5320523, 6139065, 8185420, 9822504, 10641046, 12278130, 15961569, 16370840, 21282092, 24556260, 26602615, 31923138, 42564184, 49112520, 53205230, 63846276, 79807845, 106410460, 127692552, 159615690, 212820920, 319231380, 638462760]

約数ペア:

[(1, 638462760), (2, 319231380), (3, 212820920), (4, 159615690), (5, 127692552), (6, 106410460), (8, 79807845), (10, 63846276), (12, 53205230), (13, 49112520), (15, 42564184), (20, 31923138), (24, 26602615), (26, 24556260), (30, 21282092), (39, 16370840), (40, 15961569), (52, 12278130), (60, 10641046), (65, 9822504), (78, 8185420), (104, 6139065), (120, 5320523), (130, 4911252), (156, 4092710), (195, 3274168), (260, 2455626), (312, 2046355), (390, 1637084), (520, 1227813), (780, 818542), (1560, 409271)]