21069080

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{443}}^1$

素因数の和:524

約数の個数: 64

約数和(自身を含む): 50349600

約数和(自身を除く): 29280520

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 41, 58, 82, 116, 145, 164, 205, 232, 290, 328, 410, 443, 580, 820, 886, 1160, 1189, 1640, 1772, 2215, 2378, 3544, 4430, 4756, 5945, 8860, 9512, 11890, 12847, 17720, 18163, 23780, 25694, 36326, 47560, 51388, 64235, 72652, 90815, 102776, 128470, 145304, 181630, 256940, 363260, 513880, 526727, 726520, 1053454, 2106908, 2633635, 4213816, 5267270, 10534540, 21069080]

約数ペア:

[(1, 21069080), (2, 10534540), (4, 5267270), (5, 4213816), (8, 2633635), (10, 2106908), (20, 1053454), (29, 726520), (40, 526727), (41, 513880), (58, 363260), (82, 256940), (116, 181630), (145, 145304), (164, 128470), (205, 102776), (232, 90815), (290, 72652), (328, 64235), (410, 51388), (443, 47560), (580, 36326), (820, 25694), (886, 23780), (1160, 18163), (1189, 17720), (1640, 12847), (1772, 11890), (2215, 9512), (2378, 8860), (3544, 5945), (4430, 4756)]