28403505

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{2111}}^1$

素因数の和:2158

約数の個数: 48

約数和(自身を含む): 55351296

約数和(自身を除く): 26947791

約数列:

[1, 3, 5, 9, 13, 15, 23, 39, 45, 65, 69, 115, 117, 195, 207, 299, 345, 585, 897, 1035, 1495, 2111, 2691, 4485, 6333, 10555, 13455, 18999, 27443, 31665, 48553, 82329, 94995, 137215, 145659, 242765, 246987, 411645, 436977, 631189, 728295, 1234935, 1893567, 2184885, 3155945, 5680701, 9467835, 28403505]

約数ペア:

[(1, 28403505), (3, 9467835), (5, 5680701), (9, 3155945), (13, 2184885), (15, 1893567), (23, 1234935), (39, 728295), (45, 631189), (65, 436977), (69, 411645), (115, 246987), (117, 242765), (195, 145659), (207, 137215), (299, 94995), (345, 82329), (585, 48553), (897, 31665), (1035, 27443), (1495, 18999), (2111, 13455), (2691, 10555), (4485, 6333)]