209240680

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{499}}^1\times {\mathrm{953}}^1$

素因数の和:1474

約数の個数: 64

約数和(自身を含む): 515160000

約数和(自身を除く): 305919320

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 499, 953, 998, 1906, 1996, 2495, 3812, 3992, 4765, 4990, 5489, 7624, 9530, 9980, 10483, 10978, 19060, 19960, 20966, 21956, 27445, 38120, 41932, 43912, 52415, 54890, 83864, 104830, 109780, 209660, 219560, 419320, 475547, 951094, 1902188, 2377735, 3804376, 4755470, 5231017, 9510940, 10462034, 19021880, 20924068, 26155085, 41848136, 52310170, 104620340, 209240680]

約数ペア:

[(1, 209240680), (2, 104620340), (4, 52310170), (5, 41848136), (8, 26155085), (10, 20924068), (11, 19021880), (20, 10462034), (22, 9510940), (40, 5231017), (44, 4755470), (55, 3804376), (88, 2377735), (110, 1902188), (220, 951094), (440, 475547), (499, 419320), (953, 219560), (998, 209660), (1906, 109780), (1996, 104830), (2495, 83864), (3812, 54890), (3992, 52415), (4765, 43912), (4990, 41932), (5489, 38120), (7624, 27445), (9530, 21956), (9980, 20966), (10483, 19960), (10978, 19060)]