19609720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{877}}^1$

素因数の和:944

約数の個数: 64

約数和(自身を含む): 48676320

約数和(自身を除く): 29066600

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 43, 52, 65, 86, 104, 130, 172, 215, 260, 344, 430, 520, 559, 860, 877, 1118, 1720, 1754, 2236, 2795, 3508, 4385, 4472, 5590, 7016, 8770, 11180, 11401, 17540, 22360, 22802, 35080, 37711, 45604, 57005, 75422, 91208, 114010, 150844, 188555, 228020, 301688, 377110, 456040, 490243, 754220, 980486, 1508440, 1960972, 2451215, 3921944, 4902430, 9804860, 19609720]

約数ペア:

[(1, 19609720), (2, 9804860), (4, 4902430), (5, 3921944), (8, 2451215), (10, 1960972), (13, 1508440), (20, 980486), (26, 754220), (40, 490243), (43, 456040), (52, 377110), (65, 301688), (86, 228020), (104, 188555), (130, 150844), (172, 114010), (215, 91208), (260, 75422), (344, 57005), (430, 45604), (520, 37711), (559, 35080), (860, 22802), (877, 22360), (1118, 17540), (1720, 11401), (1754, 11180), (2236, 8770), (2795, 7016), (3508, 5590), (4385, 4472)]