156720320

素因数分解:

$2^6\times 5^1\times {\mathrm{389}}^1\times {\mathrm{1259}}^1$

素因数の和:1665

約数の個数: 56

約数和(自身を含む): 374446800

約数和(自身を除く): 217726480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 389, 778, 1259, 1556, 1945, 2518, 3112, 3890, 5036, 6224, 6295, 7780, 10072, 12448, 12590, 15560, 20144, 24896, 25180, 31120, 40288, 50360, 62240, 80576, 100720, 124480, 201440, 402880, 489751, 979502, 1959004, 2448755, 3918008, 4897510, 7836016, 9795020, 15672032, 19590040, 31344064, 39180080, 78360160, 156720320]

約数ペア:

[(1, 156720320), (2, 78360160), (4, 39180080), (5, 31344064), (8, 19590040), (10, 15672032), (16, 9795020), (20, 7836016), (32, 4897510), (40, 3918008), (64, 2448755), (80, 1959004), (160, 979502), (320, 489751), (389, 402880), (778, 201440), (1259, 124480), (1556, 100720), (1945, 80576), (2518, 62240), (3112, 50360), (3890, 40288), (5036, 31120), (6224, 25180), (6295, 24896), (7780, 20144), (10072, 15560), (12448, 12590)]