20053880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{383}}^1$

素因数の和:429

約数の個数: 128

約数和(自身を含む): 59719680

約数和(自身を除く): 39665800

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 17, 20, 22, 28, 34, 35, 40, 44, 55, 56, 68, 70, 77, 85, 88, 110, 119, 136, 140, 154, 170, 187, 220, 238, 280, 308, 340, 374, 383, 385, 440, 476, 595, 616, 680, 748, 766, 770, 935, 952, 1190, 1309, 1496, 1532, 1540, 1870, 1915, 2380, 2618, 2681, 3064, 3080, 3740, 3830, 4213, 4760, 5236, 5362, 6511, 6545, 7480, 7660, 8426, 10472, 10724, 13022, 13090, 13405, 15320, 16852, 21065, 21448, 26044, 26180, 26810, 29491, 32555, 33704, 42130, 45577, 52088, 52360, 53620, 58982, 65110, 71621, 84260, 91154, 107240, 117964, 130220, 143242, 147455, 168520, 182308, 227885, 235928, 260440, 286484, 294910, 358105, 364616, 455770, 501347, 572968, 589820, 716210, 911540, 1002694, 1179640, 1432420, 1823080, 2005388, 2506735, 2864840, 4010776, 5013470, 10026940, 20053880]

約数ペア:

[(1, 20053880), (2, 10026940), (4, 5013470), (5, 4010776), (7, 2864840), (8, 2506735), (10, 2005388), (11, 1823080), (14, 1432420), (17, 1179640), (20, 1002694), (22, 911540), (28, 716210), (34, 589820), (35, 572968), (40, 501347), (44, 455770), (55, 364616), (56, 358105), (68, 294910), (70, 286484), (77, 260440), (85, 235928), (88, 227885), (110, 182308), (119, 168520), (136, 147455), (140, 143242), (154, 130220), (170, 117964), (187, 107240), (220, 91154), (238, 84260), (280, 71621), (308, 65110), (340, 58982), (374, 53620), (383, 52360), (385, 52088), (440, 45577), (476, 42130), (595, 33704), (616, 32555), (680, 29491), (748, 26810), (766, 26180), (770, 26044), (935, 21448), (952, 21065), (1190, 16852), (1309, 15320), (1496, 13405), (1532, 13090), (1540, 13022), (1870, 10724), (1915, 10472), (2380, 8426), (2618, 7660), (2681, 7480), (3064, 6545), (3080, 6511), (3740, 5362), (3830, 5236), (4213, 4760)]