213105520

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^2\times {\mathrm{47}}^1\times {\mathrm{157}}^1$

素因数の和:255

約数の個数: 120

約数和(自身を含む): 537447744

約数和(自身を除く): 324342224

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 47, 76, 80, 94, 95, 152, 157, 188, 190, 235, 304, 314, 361, 376, 380, 470, 628, 722, 752, 760, 785, 893, 940, 1256, 1444, 1520, 1570, 1786, 1805, 1880, 2512, 2888, 2983, 3140, 3572, 3610, 3760, 4465, 5776, 5966, 6280, 7144, 7220, 7379, 8930, 11932, 12560, 14288, 14440, 14758, 14915, 16967, 17860, 23864, 28880, 29516, 29830, 33934, 35720, 36895, 47728, 56677, 59032, 59660, 67868, 71440, 73790, 84835, 113354, 118064, 119320, 135736, 140201, 147580, 169670, 226708, 238640, 271472, 280402, 283385, 295160, 339340, 453416, 560804, 566770, 590320, 678680, 701005, 906832, 1121608, 1133540, 1357360, 1402010, 2243216, 2267080, 2663819, 2804020, 4534160, 5327638, 5608040, 10655276, 11216080, 13319095, 21310552, 26638190, 42621104, 53276380, 106552760, 213105520]

約数ペア:

[(1, 213105520), (2, 106552760), (4, 53276380), (5, 42621104), (8, 26638190), (10, 21310552), (16, 13319095), (19, 11216080), (20, 10655276), (38, 5608040), (40, 5327638), (47, 4534160), (76, 2804020), (80, 2663819), (94, 2267080), (95, 2243216), (152, 1402010), (157, 1357360), (188, 1133540), (190, 1121608), (235, 906832), (304, 701005), (314, 678680), (361, 590320), (376, 566770), (380, 560804), (470, 453416), (628, 339340), (722, 295160), (752, 283385), (760, 280402), (785, 271472), (893, 238640), (940, 226708), (1256, 169670), (1444, 147580), (1520, 140201), (1570, 135736), (1786, 119320), (1805, 118064), (1880, 113354), (2512, 84835), (2888, 73790), (2983, 71440), (3140, 67868), (3572, 59660), (3610, 59032), (3760, 56677), (4465, 47728), (5776, 36895), (5966, 35720), (6280, 33934), (7144, 29830), (7220, 29516), (7379, 28880), (8930, 23864), (11932, 17860), (12560, 16967), (14288, 14915), (14440, 14758)]