221498620

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{79}}^1\times {\mathrm{2861}}^1$

素因数の和:2963

約数の個数: 72

約数和(自身を含む): 548130240

約数和(自身を除く): 326631620

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 79, 98, 140, 158, 196, 245, 316, 395, 490, 553, 790, 980, 1106, 1580, 2212, 2765, 2861, 3871, 5530, 5722, 7742, 11060, 11444, 14305, 15484, 19355, 20027, 28610, 38710, 40054, 57220, 77420, 80108, 100135, 140189, 200270, 226019, 280378, 400540, 452038, 560756, 700945, 904076, 1130095, 1401890, 1582133, 2260190, 2803780, 3164266, 4520380, 6328532, 7910665, 11074931, 15821330, 22149862, 31642660, 44299724, 55374655, 110749310, 221498620]

約数ペア:

[(1, 221498620), (2, 110749310), (4, 55374655), (5, 44299724), (7, 31642660), (10, 22149862), (14, 15821330), (20, 11074931), (28, 7910665), (35, 6328532), (49, 4520380), (70, 3164266), (79, 2803780), (98, 2260190), (140, 1582133), (158, 1401890), (196, 1130095), (245, 904076), (316, 700945), (395, 560756), (490, 452038), (553, 400540), (790, 280378), (980, 226019), (1106, 200270), (1580, 140189), (2212, 100135), (2765, 80108), (2861, 77420), (3871, 57220), (5530, 40054), (5722, 38710), (7742, 28610), (11060, 20027), (11444, 19355), (14305, 15484)]