219805495

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{157}}^1\times {\mathrm{181}}^1$

素因数の和:380

約数の個数: 64

約数和(自身を含む): 347832576

約数和(自身を除く): 128027081

約数列:

[1, 5, 7, 13, 17, 35, 65, 85, 91, 119, 157, 181, 221, 455, 595, 785, 905, 1099, 1105, 1267, 1547, 2041, 2353, 2669, 3077, 5495, 6335, 7735, 10205, 11765, 13345, 14287, 15385, 16471, 18683, 21539, 28417, 34697, 40001, 71435, 82355, 93415, 107695, 142085, 173485, 198919, 200005, 242879, 280007, 369421, 483089, 994595, 1214395, 1400035, 1847105, 2415445, 2585947, 3381623, 6280157, 12929735, 16908115, 31400785, 43961099, 219805495]

約数ペア:

[(1, 219805495), (5, 43961099), (7, 31400785), (13, 16908115), (17, 12929735), (35, 6280157), (65, 3381623), (85, 2585947), (91, 2415445), (119, 1847105), (157, 1400035), (181, 1214395), (221, 994595), (455, 483089), (595, 369421), (785, 280007), (905, 242879), (1099, 200005), (1105, 198919), (1267, 173485), (1547, 142085), (2041, 107695), (2353, 93415), (2669, 82355), (3077, 71435), (5495, 40001), (6335, 34697), (7735, 28417), (10205, 21539), (11765, 18683), (13345, 16471), (14287, 15385)]