210901520

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{1559}}^1$

素因数の和:1680

約数の個数: 80

約数和(自身を含む): 522288000

約数和(自身を除く): 311386480

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 89, 95, 152, 178, 190, 304, 356, 380, 445, 712, 760, 890, 1424, 1520, 1559, 1691, 1780, 3118, 3382, 3560, 6236, 6764, 7120, 7795, 8455, 12472, 13528, 15590, 16910, 24944, 27056, 29621, 31180, 33820, 59242, 62360, 67640, 118484, 124720, 135280, 138751, 148105, 236968, 277502, 296210, 473936, 555004, 592420, 693755, 1110008, 1184840, 1387510, 2220016, 2369680, 2636269, 2775020, 5272538, 5550040, 10545076, 11100080, 13181345, 21090152, 26362690, 42180304, 52725380, 105450760, 210901520]

約数ペア:

[(1, 210901520), (2, 105450760), (4, 52725380), (5, 42180304), (8, 26362690), (10, 21090152), (16, 13181345), (19, 11100080), (20, 10545076), (38, 5550040), (40, 5272538), (76, 2775020), (80, 2636269), (89, 2369680), (95, 2220016), (152, 1387510), (178, 1184840), (190, 1110008), (304, 693755), (356, 592420), (380, 555004), (445, 473936), (712, 296210), (760, 277502), (890, 236968), (1424, 148105), (1520, 138751), (1559, 135280), (1691, 124720), (1780, 118484), (3118, 67640), (3382, 62360), (3560, 59242), (6236, 33820), (6764, 31180), (7120, 29621), (7795, 27056), (8455, 24944), (12472, 16910), (13528, 15590)]