19860000

素因数分解:

$2^5\times 3^1\times 5^4\times {\mathrm{331}}^1$

素因数の和:364

約数の個数: 120

約数和(自身を含む): 65341584

約数和(自身を除く): 45481584

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 25, 30, 32, 40, 48, 50, 60, 75, 80, 96, 100, 120, 125, 150, 160, 200, 240, 250, 300, 331, 375, 400, 480, 500, 600, 625, 662, 750, 800, 993, 1000, 1200, 1250, 1324, 1500, 1655, 1875, 1986, 2000, 2400, 2500, 2648, 3000, 3310, 3750, 3972, 4000, 4965, 5000, 5296, 6000, 6620, 7500, 7944, 8275, 9930, 10000, 10592, 12000, 13240, 15000, 15888, 16550, 19860, 20000, 24825, 26480, 30000, 31776, 33100, 39720, 41375, 49650, 52960, 60000, 66200, 79440, 82750, 99300, 124125, 132400, 158880, 165500, 198600, 206875, 248250, 264800, 331000, 397200, 413750, 496500, 620625, 662000, 794400, 827500, 993000, 1241250, 1324000, 1655000, 1986000, 2482500, 3310000, 3972000, 4965000, 6620000, 9930000, 19860000]

約数ペア:

[(1, 19860000), (2, 9930000), (3, 6620000), (4, 4965000), (5, 3972000), (6, 3310000), (8, 2482500), (10, 1986000), (12, 1655000), (15, 1324000), (16, 1241250), (20, 993000), (24, 827500), (25, 794400), (30, 662000), (32, 620625), (40, 496500), (48, 413750), (50, 397200), (60, 331000), (75, 264800), (80, 248250), (96, 206875), (100, 198600), (120, 165500), (125, 158880), (150, 132400), (160, 124125), (200, 99300), (240, 82750), (250, 79440), (300, 66200), (331, 60000), (375, 52960), (400, 49650), (480, 41375), (500, 39720), (600, 33100), (625, 31776), (662, 30000), (750, 26480), (800, 24825), (993, 20000), (1000, 19860), (1200, 16550), (1250, 15888), (1324, 15000), (1500, 13240), (1655, 12000), (1875, 10592), (1986, 10000), (2000, 9930), (2400, 8275), (2500, 7944), (2648, 7500), (3000, 6620), (3310, 6000), (3750, 5296), (3972, 5000), (4000, 4965)]