20790120

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{13327}}^1$

素因数の和:13354

約数の個数: 64

約数和(自身を含む): 67173120

約数和(自身を除く): 46383000

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, 13327, 26654, 39981, 53308, 66635, 79962, 106616, 133270, 159924, 173251, 199905, 266540, 319848, 346502, 399810, 519753, 533080, 693004, 799620, 866255, 1039506, 1386008, 1599240, 1732510, 2079012, 2598765, 3465020, 4158024, 5197530, 6930040, 10395060, 20790120]

約数ペア:

[(1, 20790120), (2, 10395060), (3, 6930040), (4, 5197530), (5, 4158024), (6, 3465020), (8, 2598765), (10, 2079012), (12, 1732510), (13, 1599240), (15, 1386008), (20, 1039506), (24, 866255), (26, 799620), (30, 693004), (39, 533080), (40, 519753), (52, 399810), (60, 346502), (65, 319848), (78, 266540), (104, 199905), (120, 173251), (130, 159924), (156, 133270), (195, 106616), (260, 79962), (312, 66635), (390, 53308), (520, 39981), (780, 26654), (1560, 13327)]