257035380

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{87427}}^1$

素因数の和:87453

約数の個数: 72

約数和(自身を含む): 837210528

約数和(自身を除く): 580175148

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 87427, 174854, 262281, 349708, 437135, 524562, 611989, 874270, 1049124, 1223978, 1311405, 1748540, 1835967, 2447956, 2622810, 3059945, 3671934, 4283923, 5245620, 6119890, 7343868, 8567846, 9179835, 12239780, 12851769, 17135692, 18359670, 21419615, 25703538, 36719340, 42839230, 51407076, 64258845, 85678460, 128517690, 257035380]

約数ペア:

[(1, 257035380), (2, 128517690), (3, 85678460), (4, 64258845), (5, 51407076), (6, 42839230), (7, 36719340), (10, 25703538), (12, 21419615), (14, 18359670), (15, 17135692), (20, 12851769), (21, 12239780), (28, 9179835), (30, 8567846), (35, 7343868), (42, 6119890), (49, 5245620), (60, 4283923), (70, 3671934), (84, 3059945), (98, 2622810), (105, 2447956), (140, 1835967), (147, 1748540), (196, 1311405), (210, 1223978), (245, 1049124), (294, 874270), (420, 611989), (490, 524562), (588, 437135), (735, 349708), (980, 262281), (1470, 174854), (2940, 87427)]