20559708

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{223}}^1$

素因数の和:443

約数の個数: 72

約数和(自身を含む): 56504448

約数和(自身を除く): 35944740

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 156, 197, 223, 234, 394, 446, 468, 591, 669, 788, 892, 1182, 1338, 1773, 2007, 2364, 2561, 2676, 2899, 3546, 4014, 5122, 5798, 7092, 7683, 8028, 8697, 10244, 11596, 15366, 17394, 23049, 26091, 30732, 34788, 43931, 46098, 52182, 87862, 92196, 104364, 131793, 175724, 263586, 395379, 527172, 571103, 790758, 1142206, 1581516, 1713309, 2284412, 3426618, 5139927, 6853236, 10279854, 20559708]

約数ペア:

[(1, 20559708), (2, 10279854), (3, 6853236), (4, 5139927), (6, 3426618), (9, 2284412), (12, 1713309), (13, 1581516), (18, 1142206), (26, 790758), (36, 571103), (39, 527172), (52, 395379), (78, 263586), (117, 175724), (156, 131793), (197, 104364), (223, 92196), (234, 87862), (394, 52182), (446, 46098), (468, 43931), (591, 34788), (669, 30732), (788, 26091), (892, 23049), (1182, 17394), (1338, 15366), (1773, 11596), (2007, 10244), (2364, 8697), (2561, 8028), (2676, 7683), (2899, 7092), (3546, 5798), (4014, 5122)]