207920680

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{521}}^1\times {\mathrm{907}}^1$

素因数の和:1450

約数の個数: 64

約数和(自身を含む): 511894080

約数和(自身を除く): 303973400

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 521, 907, 1042, 1814, 2084, 2605, 3628, 4168, 4535, 5210, 5731, 7256, 9070, 9977, 10420, 11462, 18140, 19954, 20840, 22924, 28655, 36280, 39908, 45848, 49885, 57310, 79816, 99770, 114620, 199540, 229240, 399080, 472547, 945094, 1890188, 2362735, 3780376, 4725470, 5198017, 9450940, 10396034, 18901880, 20792068, 25990085, 41584136, 51980170, 103960340, 207920680]

約数ペア:

[(1, 207920680), (2, 103960340), (4, 51980170), (5, 41584136), (8, 25990085), (10, 20792068), (11, 18901880), (20, 10396034), (22, 9450940), (40, 5198017), (44, 4725470), (55, 3780376), (88, 2362735), (110, 1890188), (220, 945094), (440, 472547), (521, 399080), (907, 229240), (1042, 199540), (1814, 114620), (2084, 99770), (2605, 79816), (3628, 57310), (4168, 49885), (4535, 45848), (5210, 39908), (5731, 36280), (7256, 28655), (9070, 22924), (9977, 20840), (10420, 19954), (11462, 18140)]