21115428

素因数分解:

$2^2\times 3^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{1163}}^1$

素因数の和:1276

約数の個数: 48

約数和(自身を含む): 52799040

約数和(自身を除く): 31683612

約数列:

[1, 2, 3, 4, 6, 12, 17, 34, 51, 68, 89, 102, 178, 204, 267, 356, 534, 1068, 1163, 1513, 2326, 3026, 3489, 4539, 4652, 6052, 6978, 9078, 13956, 18156, 19771, 39542, 59313, 79084, 103507, 118626, 207014, 237252, 310521, 414028, 621042, 1242084, 1759619, 3519238, 5278857, 7038476, 10557714, 21115428]

約数ペア:

[(1, 21115428), (2, 10557714), (3, 7038476), (4, 5278857), (6, 3519238), (12, 1759619), (17, 1242084), (34, 621042), (51, 414028), (68, 310521), (89, 237252), (102, 207014), (178, 118626), (204, 103507), (267, 79084), (356, 59313), (534, 39542), (1068, 19771), (1163, 18156), (1513, 13956), (2326, 9078), (3026, 6978), (3489, 6052), (4539, 4652)]