81156320

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{72461}}^1$

素因数の和:72483

約数の個数: 48

約数和(自身を含む): 219125088

約数和(自身を除く): 137968768

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 72461, 144922, 289844, 362305, 507227, 579688, 724610, 1014454, 1159376, 1449220, 2028908, 2318752, 2536135, 2898440, 4057816, 5072270, 5796880, 8115632, 10144540, 11593760, 16231264, 20289080, 40578160, 81156320]

約数ペア:

[(1, 81156320), (2, 40578160), (4, 20289080), (5, 16231264), (7, 11593760), (8, 10144540), (10, 8115632), (14, 5796880), (16, 5072270), (20, 4057816), (28, 2898440), (32, 2536135), (35, 2318752), (40, 2028908), (56, 1449220), (70, 1159376), (80, 1014454), (112, 724610), (140, 579688), (160, 507227), (224, 362305), (280, 289844), (560, 144922), (1120, 72461)]