20728680

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{24677}}^1$

素因数の和:24698

約数の個数: 64

約数和(自身を含む): 71072640

約数和(自身を除く): 50343960

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 24677, 49354, 74031, 98708, 123385, 148062, 172739, 197416, 246770, 296124, 345478, 370155, 493540, 518217, 592248, 690956, 740310, 863695, 987080, 1036434, 1381912, 1480620, 1727390, 2072868, 2591085, 2961240, 3454780, 4145736, 5182170, 6909560, 10364340, 20728680]

約数ペア:

[(1, 20728680), (2, 10364340), (3, 6909560), (4, 5182170), (5, 4145736), (6, 3454780), (7, 2961240), (8, 2591085), (10, 2072868), (12, 1727390), (14, 1480620), (15, 1381912), (20, 1036434), (21, 987080), (24, 863695), (28, 740310), (30, 690956), (35, 592248), (40, 518217), (42, 493540), (56, 370155), (60, 345478), (70, 296124), (84, 246770), (105, 197416), (120, 172739), (140, 148062), (168, 123385), (210, 98708), (280, 74031), (420, 49354), (840, 24677)]