28428440

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^2\times {\mathrm{191}}^1$

素因数の和:324

約数の個数: 48

約数和(自身を含む): 65370240

約数和(自身を除く): 36941800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 191, 244, 305, 382, 488, 610, 764, 955, 1220, 1528, 1910, 2440, 3721, 3820, 7442, 7640, 11651, 14884, 18605, 23302, 29768, 37210, 46604, 58255, 74420, 93208, 116510, 148840, 233020, 466040, 710711, 1421422, 2842844, 3553555, 5685688, 7107110, 14214220, 28428440]

約数ペア:

[(1, 28428440), (2, 14214220), (4, 7107110), (5, 5685688), (8, 3553555), (10, 2842844), (20, 1421422), (40, 710711), (61, 466040), (122, 233020), (191, 148840), (244, 116510), (305, 93208), (382, 74420), (488, 58255), (610, 46604), (764, 37210), (955, 29768), (1220, 23302), (1528, 18605), (1910, 14884), (2440, 11651), (3721, 7640), (3820, 7442)]