81788280

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{97367}}^1$

素因数の和:97388

約数の個数: 64

約数和(自身を含む): 280419840

約数和(自身を除く): 198631560

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, 97367, 194734, 292101, 389468, 486835, 584202, 681569, 778936, 973670, 1168404, 1363138, 1460505, 1947340, 2044707, 2336808, 2726276, 2921010, 3407845, 3894680, 4089414, 5452552, 5842020, 6815690, 8178828, 10223535, 11684040, 13631380, 16357656, 20447070, 27262760, 40894140, 81788280]

約数ペア:

[(1, 81788280), (2, 40894140), (3, 27262760), (4, 20447070), (5, 16357656), (6, 13631380), (7, 11684040), (8, 10223535), (10, 8178828), (12, 6815690), (14, 5842020), (15, 5452552), (20, 4089414), (21, 3894680), (24, 3407845), (28, 2921010), (30, 2726276), (35, 2336808), (40, 2044707), (42, 1947340), (56, 1460505), (60, 1363138), (70, 1168404), (84, 973670), (105, 778936), (120, 681569), (140, 584202), (168, 486835), (210, 389468), (280, 292101), (420, 194734), (840, 97367)]