21458520

素因数分解:

$2^3\times 3^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{179}}^1$

素因数の和:239

約数の個数: 160

約数和(自身を含む): 74487600

約数和(自身を除く): 53029080

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 37, 40, 45, 54, 60, 72, 74, 81, 90, 108, 111, 120, 135, 148, 162, 179, 180, 185, 216, 222, 270, 296, 324, 333, 358, 360, 370, 405, 444, 537, 540, 555, 648, 666, 716, 740, 810, 888, 895, 999, 1074, 1080, 1110, 1332, 1432, 1480, 1611, 1620, 1665, 1790, 1998, 2148, 2220, 2664, 2685, 2997, 3222, 3240, 3330, 3580, 3996, 4296, 4440, 4833, 4995, 5370, 5994, 6444, 6623, 6660, 7160, 7992, 8055, 9666, 9990, 10740, 11988, 12888, 13246, 13320, 14499, 14985, 16110, 19332, 19869, 19980, 21480, 23976, 24165, 26492, 28998, 29970, 32220, 33115, 38664, 39738, 39960, 48330, 52984, 57996, 59607, 59940, 64440, 66230, 72495, 79476, 96660, 99345, 115992, 119214, 119880, 132460, 144990, 158952, 178821, 193320, 198690, 238428, 264920, 289980, 298035, 357642, 397380, 476856, 536463, 579960, 596070, 715284, 794760, 894105, 1072926, 1192140, 1430568, 1788210, 2145852, 2384280, 2682315, 3576420, 4291704, 5364630, 7152840, 10729260, 21458520]

約数ペア:

[(1, 21458520), (2, 10729260), (3, 7152840), (4, 5364630), (5, 4291704), (6, 3576420), (8, 2682315), (9, 2384280), (10, 2145852), (12, 1788210), (15, 1430568), (18, 1192140), (20, 1072926), (24, 894105), (27, 794760), (30, 715284), (36, 596070), (37, 579960), (40, 536463), (45, 476856), (54, 397380), (60, 357642), (72, 298035), (74, 289980), (81, 264920), (90, 238428), (108, 198690), (111, 193320), (120, 178821), (135, 158952), (148, 144990), (162, 132460), (179, 119880), (180, 119214), (185, 115992), (216, 99345), (222, 96660), (270, 79476), (296, 72495), (324, 66230), (333, 64440), (358, 59940), (360, 59607), (370, 57996), (405, 52984), (444, 48330), (537, 39960), (540, 39738), (555, 38664), (648, 33115), (666, 32220), (716, 29970), (740, 28998), (810, 26492), (888, 24165), (895, 23976), (999, 21480), (1074, 19980), (1080, 19869), (1110, 19332), (1332, 16110), (1432, 14985), (1480, 14499), (1611, 13320), (1620, 13246), (1665, 12888), (1790, 11988), (1998, 10740), (2148, 9990), (2220, 9666), (2664, 8055), (2685, 7992), (2997, 7160), (3222, 6660), (3240, 6623), (3330, 6444), (3580, 5994), (3996, 5370), (4296, 4995), (4440, 4833)]