19816920

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{59}}^1\times {\mathrm{311}}^1$

素因数の和:390

約数の個数: 128

約数和(自身を含む): 67392000

約数和(自身を除く): 47575080

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 59, 60, 72, 90, 108, 118, 120, 135, 177, 180, 216, 236, 270, 295, 311, 354, 360, 472, 531, 540, 590, 622, 708, 885, 933, 1062, 1080, 1180, 1244, 1416, 1555, 1593, 1770, 1866, 2124, 2360, 2488, 2655, 2799, 3110, 3186, 3540, 3732, 4248, 4665, 5310, 5598, 6220, 6372, 7080, 7464, 7965, 8397, 9330, 10620, 11196, 12440, 12744, 13995, 15930, 16794, 18349, 18660, 21240, 22392, 27990, 31860, 33588, 36698, 37320, 41985, 55047, 55980, 63720, 67176, 73396, 83970, 91745, 110094, 111960, 146792, 165141, 167940, 183490, 220188, 275235, 330282, 335880, 366980, 440376, 495423, 550470, 660564, 733960, 825705, 990846, 1100940, 1321128, 1651410, 1981692, 2201880, 2477115, 3302820, 3963384, 4954230, 6605640, 9908460, 19816920]

約数ペア:

[(1, 19816920), (2, 9908460), (3, 6605640), (4, 4954230), (5, 3963384), (6, 3302820), (8, 2477115), (9, 2201880), (10, 1981692), (12, 1651410), (15, 1321128), (18, 1100940), (20, 990846), (24, 825705), (27, 733960), (30, 660564), (36, 550470), (40, 495423), (45, 440376), (54, 366980), (59, 335880), (60, 330282), (72, 275235), (90, 220188), (108, 183490), (118, 167940), (120, 165141), (135, 146792), (177, 111960), (180, 110094), (216, 91745), (236, 83970), (270, 73396), (295, 67176), (311, 63720), (354, 55980), (360, 55047), (472, 41985), (531, 37320), (540, 36698), (590, 33588), (622, 31860), (708, 27990), (885, 22392), (933, 21240), (1062, 18660), (1080, 18349), (1180, 16794), (1244, 15930), (1416, 13995), (1555, 12744), (1593, 12440), (1770, 11196), (1866, 10620), (2124, 9330), (2360, 8397), (2488, 7965), (2655, 7464), (2799, 7080), (3110, 6372), (3186, 6220), (3540, 5598), (3732, 5310), (4248, 4665)]