131045840

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{39953}}^1$

素因数の和:40007

約数の個数: 40

約数和(自身を含む): 312120648

約数和(自身を除く): 181074808

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 39953, 79906, 159812, 199765, 319624, 399530, 639248, 799060, 1598120, 1638073, 3196240, 3276146, 6552292, 8190365, 13104584, 16380730, 26209168, 32761460, 65522920, 131045840]

約数ペア:

[(1, 131045840), (2, 65522920), (4, 32761460), (5, 26209168), (8, 16380730), (10, 13104584), (16, 8190365), (20, 6552292), (40, 3276146), (41, 3196240), (80, 1638073), (82, 1598120), (164, 799060), (205, 639248), (328, 399530), (410, 319624), (656, 199765), (820, 159812), (1640, 79906), (3280, 39953)]