20356920

素因数分解:

$2^3\times 3^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{103}}^1$

素因数の和:187

約数の個数: 160

約数和(自身を含む): 70218720

約数和(自身を除く): 49861800

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 61, 72, 81, 90, 103, 108, 120, 122, 135, 162, 180, 183, 206, 216, 244, 270, 305, 309, 324, 360, 366, 405, 412, 488, 515, 540, 549, 610, 618, 648, 732, 810, 824, 915, 927, 1030, 1080, 1098, 1220, 1236, 1464, 1545, 1620, 1647, 1830, 1854, 2060, 2196, 2440, 2472, 2745, 2781, 3090, 3240, 3294, 3660, 3708, 4120, 4392, 4635, 4941, 5490, 5562, 6180, 6283, 6588, 7320, 7416, 8235, 8343, 9270, 9882, 10980, 11124, 12360, 12566, 13176, 13905, 16470, 16686, 18540, 18849, 19764, 21960, 22248, 24705, 25132, 27810, 31415, 32940, 33372, 37080, 37698, 39528, 41715, 49410, 50264, 55620, 56547, 62830, 65880, 66744, 75396, 83430, 94245, 98820, 111240, 113094, 125660, 150792, 166860, 169641, 188490, 197640, 226188, 251320, 282735, 333720, 339282, 376980, 452376, 508923, 565470, 678564, 753960, 848205, 1017846, 1130940, 1357128, 1696410, 2035692, 2261880, 2544615, 3392820, 4071384, 5089230, 6785640, 10178460, 20356920]

約数ペア:

[(1, 20356920), (2, 10178460), (3, 6785640), (4, 5089230), (5, 4071384), (6, 3392820), (8, 2544615), (9, 2261880), (10, 2035692), (12, 1696410), (15, 1357128), (18, 1130940), (20, 1017846), (24, 848205), (27, 753960), (30, 678564), (36, 565470), (40, 508923), (45, 452376), (54, 376980), (60, 339282), (61, 333720), (72, 282735), (81, 251320), (90, 226188), (103, 197640), (108, 188490), (120, 169641), (122, 166860), (135, 150792), (162, 125660), (180, 113094), (183, 111240), (206, 98820), (216, 94245), (244, 83430), (270, 75396), (305, 66744), (309, 65880), (324, 62830), (360, 56547), (366, 55620), (405, 50264), (412, 49410), (488, 41715), (515, 39528), (540, 37698), (549, 37080), (610, 33372), (618, 32940), (648, 31415), (732, 27810), (810, 25132), (824, 24705), (915, 22248), (927, 21960), (1030, 19764), (1080, 18849), (1098, 18540), (1220, 16686), (1236, 16470), (1464, 13905), (1545, 13176), (1620, 12566), (1647, 12360), (1830, 11124), (1854, 10980), (2060, 9882), (2196, 9270), (2440, 8343), (2472, 8235), (2745, 7416), (2781, 7320), (3090, 6588), (3240, 6283), (3294, 6180), (3660, 5562), (3708, 5490), (4120, 4941), (4392, 4635)]