1408028920

素因数分解:

$2^3\times 5^1\times {\mathrm{2521}}^1\times {\mathrm{13963}}^1$

素因数の和:16495

約数の個数: 32

約数和(自身を含む): 3169548720

約数和(自身を除く): 1761519800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2521, 5042, 10084, 12605, 13963, 20168, 25210, 27926, 50420, 55852, 69815, 100840, 111704, 139630, 279260, 558520, 35200723, 70401446, 140802892, 176003615, 281605784, 352007230, 704014460, 1408028920]

約数ペア:

[(1, 1408028920), (2, 704014460), (4, 352007230), (5, 281605784), (8, 176003615), (10, 140802892), (20, 70401446), (40, 35200723), (2521, 558520), (5042, 279260), (10084, 139630), (12605, 111704), (13963, 100840), (20168, 69815), (25210, 55852), (27926, 50420)]