20785140

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{631}}^1$

素因数の和:710

約数の個数: 96

約数和(自身を含む): 65829120

約数和(自身を除く): 45043980

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 61, 90, 108, 122, 135, 180, 183, 244, 270, 305, 366, 540, 549, 610, 631, 732, 915, 1098, 1220, 1262, 1647, 1830, 1893, 2196, 2524, 2745, 3155, 3294, 3660, 3786, 5490, 5679, 6310, 6588, 7572, 8235, 9465, 10980, 11358, 12620, 16470, 17037, 18930, 22716, 28395, 32940, 34074, 37860, 38491, 56790, 68148, 76982, 85185, 113580, 115473, 153964, 170370, 192455, 230946, 340740, 346419, 384910, 461892, 577365, 692838, 769820, 1039257, 1154730, 1385676, 1732095, 2078514, 2309460, 3464190, 4157028, 5196285, 6928380, 10392570, 20785140]

約数ペア:

[(1, 20785140), (2, 10392570), (3, 6928380), (4, 5196285), (5, 4157028), (6, 3464190), (9, 2309460), (10, 2078514), (12, 1732095), (15, 1385676), (18, 1154730), (20, 1039257), (27, 769820), (30, 692838), (36, 577365), (45, 461892), (54, 384910), (60, 346419), (61, 340740), (90, 230946), (108, 192455), (122, 170370), (135, 153964), (180, 115473), (183, 113580), (244, 85185), (270, 76982), (305, 68148), (366, 56790), (540, 38491), (549, 37860), (610, 34074), (631, 32940), (732, 28395), (915, 22716), (1098, 18930), (1220, 17037), (1262, 16470), (1647, 12620), (1830, 11358), (1893, 10980), (2196, 9465), (2524, 8235), (2745, 7572), (3155, 6588), (3294, 6310), (3660, 5679), (3786, 5490)]