21723604

素因数分解:

$2^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{127}}^1\times {\mathrm{149}}^1$

素因数の和:328

約数の個数: 48

約数和(自身を含む): 45158400

約数和(自身を除く): 23434796

約数列:

[1, 2, 4, 7, 14, 28, 41, 82, 127, 149, 164, 254, 287, 298, 508, 574, 596, 889, 1043, 1148, 1778, 2086, 3556, 4172, 5207, 6109, 10414, 12218, 18923, 20828, 24436, 36449, 37846, 42763, 72898, 75692, 85526, 132461, 145796, 171052, 264922, 529844, 775843, 1551686, 3103372, 5430901, 10861802, 21723604]

約数ペア:

[(1, 21723604), (2, 10861802), (4, 5430901), (7, 3103372), (14, 1551686), (28, 775843), (41, 529844), (82, 264922), (127, 171052), (149, 145796), (164, 132461), (254, 85526), (287, 75692), (298, 72898), (508, 42763), (574, 37846), (596, 36449), (889, 24436), (1043, 20828), (1148, 18923), (1778, 12218), (2086, 10414), (3556, 6109), (4172, 5207)]