28560272

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{197}}^1$

素因数の和:276

約数の個数: 80

約数和(自身を含む): 64964592

約数和(自身を除く): 36404320

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 34, 41, 52, 68, 82, 104, 136, 164, 197, 208, 221, 272, 328, 394, 442, 533, 656, 697, 788, 884, 1066, 1394, 1576, 1768, 2132, 2561, 2788, 3152, 3349, 3536, 4264, 5122, 5576, 6698, 8077, 8528, 9061, 10244, 11152, 13396, 16154, 18122, 20488, 26792, 32308, 36244, 40976, 43537, 53584, 64616, 72488, 87074, 105001, 129232, 137309, 144976, 174148, 210002, 274618, 348296, 420004, 549236, 696592, 840008, 1098472, 1680016, 1785017, 2196944, 3570034, 7140068, 14280136, 28560272]

約数ペア:

[(1, 28560272), (2, 14280136), (4, 7140068), (8, 3570034), (13, 2196944), (16, 1785017), (17, 1680016), (26, 1098472), (34, 840008), (41, 696592), (52, 549236), (68, 420004), (82, 348296), (104, 274618), (136, 210002), (164, 174148), (197, 144976), (208, 137309), (221, 129232), (272, 105001), (328, 87074), (394, 72488), (442, 64616), (533, 53584), (656, 43537), (697, 40976), (788, 36244), (884, 32308), (1066, 26792), (1394, 20488), (1576, 18122), (1768, 16154), (2132, 13396), (2561, 11152), (2788, 10244), (3152, 9061), (3349, 8528), (3536, 8077), (4264, 6698), (5122, 5576)]