20455800

素因数分解:

$2^3\times 3^1\times 5^2\times {\mathrm{103}}^1\times {\mathrm{331}}^1$

素因数の和:453

約数の個数: 96

約数和(自身を含む): 64222080

約数和(自身を除く): 43766280

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 25, 30, 40, 50, 60, 75, 100, 103, 120, 150, 200, 206, 300, 309, 331, 412, 515, 600, 618, 662, 824, 993, 1030, 1236, 1324, 1545, 1655, 1986, 2060, 2472, 2575, 2648, 3090, 3310, 3972, 4120, 4965, 5150, 6180, 6620, 7725, 7944, 8275, 9930, 10300, 12360, 13240, 15450, 16550, 19860, 20600, 24825, 30900, 33100, 34093, 39720, 49650, 61800, 66200, 68186, 99300, 102279, 136372, 170465, 198600, 204558, 272744, 340930, 409116, 511395, 681860, 818232, 852325, 1022790, 1363720, 1704650, 2045580, 2556975, 3409300, 4091160, 5113950, 6818600, 10227900, 20455800]

約数ペア:

[(1, 20455800), (2, 10227900), (3, 6818600), (4, 5113950), (5, 4091160), (6, 3409300), (8, 2556975), (10, 2045580), (12, 1704650), (15, 1363720), (20, 1022790), (24, 852325), (25, 818232), (30, 681860), (40, 511395), (50, 409116), (60, 340930), (75, 272744), (100, 204558), (103, 198600), (120, 170465), (150, 136372), (200, 102279), (206, 99300), (300, 68186), (309, 66200), (331, 61800), (412, 49650), (515, 39720), (600, 34093), (618, 33100), (662, 30900), (824, 24825), (993, 20600), (1030, 19860), (1236, 16550), (1324, 15450), (1545, 13240), (1655, 12360), (1986, 10300), (2060, 9930), (2472, 8275), (2575, 7944), (2648, 7725), (3090, 6620), (3310, 6180), (3972, 5150), (4120, 4965)]