21240360

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{277}}^1$

素因数の和:368

約数の個数: 128

約数和(自身を含む): 72057600

約数和(自身を除く): 50817240

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 71, 72, 90, 108, 120, 135, 142, 180, 213, 216, 270, 277, 284, 355, 360, 426, 540, 554, 568, 639, 710, 831, 852, 1065, 1080, 1108, 1278, 1385, 1420, 1662, 1704, 1917, 2130, 2216, 2493, 2556, 2770, 2840, 3195, 3324, 3834, 4155, 4260, 4986, 5112, 5540, 6390, 6648, 7479, 7668, 8310, 8520, 9585, 9972, 11080, 12465, 12780, 14958, 15336, 16620, 19170, 19667, 19944, 24930, 25560, 29916, 33240, 37395, 38340, 39334, 49860, 59001, 59832, 74790, 76680, 78668, 98335, 99720, 118002, 149580, 157336, 177003, 196670, 236004, 295005, 299160, 354006, 393340, 472008, 531009, 590010, 708012, 786680, 885015, 1062018, 1180020, 1416024, 1770030, 2124036, 2360040, 2655045, 3540060, 4248072, 5310090, 7080120, 10620180, 21240360]

約数ペア:

[(1, 21240360), (2, 10620180), (3, 7080120), (4, 5310090), (5, 4248072), (6, 3540060), (8, 2655045), (9, 2360040), (10, 2124036), (12, 1770030), (15, 1416024), (18, 1180020), (20, 1062018), (24, 885015), (27, 786680), (30, 708012), (36, 590010), (40, 531009), (45, 472008), (54, 393340), (60, 354006), (71, 299160), (72, 295005), (90, 236004), (108, 196670), (120, 177003), (135, 157336), (142, 149580), (180, 118002), (213, 99720), (216, 98335), (270, 78668), (277, 76680), (284, 74790), (355, 59832), (360, 59001), (426, 49860), (540, 39334), (554, 38340), (568, 37395), (639, 33240), (710, 29916), (831, 25560), (852, 24930), (1065, 19944), (1080, 19667), (1108, 19170), (1278, 16620), (1385, 15336), (1420, 14958), (1662, 12780), (1704, 12465), (1917, 11080), (2130, 9972), (2216, 9585), (2493, 8520), (2556, 8310), (2770, 7668), (2840, 7479), (3195, 6648), (3324, 6390), (3834, 5540), (4155, 5112), (4260, 4986)]