30979960

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{181}}^1\times {\mathrm{389}}^1$

素因数の和:592

約数の個数: 64

約数和(自身を含む): 76658400

約数和(自身を除く): 45678440

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 181, 220, 362, 389, 440, 724, 778, 905, 1448, 1556, 1810, 1945, 1991, 3112, 3620, 3890, 3982, 4279, 7240, 7780, 7964, 8558, 9955, 15560, 15928, 17116, 19910, 21395, 34232, 39820, 42790, 70409, 79640, 85580, 140818, 171160, 281636, 352045, 563272, 704090, 774499, 1408180, 1548998, 2816360, 3097996, 3872495, 6195992, 7744990, 15489980, 30979960]

約数ペア:

[(1, 30979960), (2, 15489980), (4, 7744990), (5, 6195992), (8, 3872495), (10, 3097996), (11, 2816360), (20, 1548998), (22, 1408180), (40, 774499), (44, 704090), (55, 563272), (88, 352045), (110, 281636), (181, 171160), (220, 140818), (362, 85580), (389, 79640), (440, 70409), (724, 42790), (778, 39820), (905, 34232), (1448, 21395), (1556, 19910), (1810, 17116), (1945, 15928), (1991, 15560), (3112, 9955), (3620, 8558), (3890, 7964), (3982, 7780), (4279, 7240)]