21396360

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{79}}^1$

素因数の和:191

約数の個数: 128

約数和(自身を含む): 67852800

約数和(自身を除く): 46456440

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 37, 40, 60, 61, 74, 79, 111, 120, 122, 148, 158, 183, 185, 222, 237, 244, 296, 305, 316, 366, 370, 395, 444, 474, 488, 555, 610, 632, 732, 740, 790, 888, 915, 948, 1110, 1185, 1220, 1464, 1480, 1580, 1830, 1896, 2220, 2257, 2370, 2440, 2923, 3160, 3660, 4440, 4514, 4740, 4819, 5846, 6771, 7320, 8769, 9028, 9480, 9638, 11285, 11692, 13542, 14457, 14615, 17538, 18056, 19276, 22570, 23384, 24095, 27084, 28914, 29230, 33855, 35076, 38552, 43845, 45140, 48190, 54168, 57828, 58460, 67710, 70152, 72285, 87690, 90280, 96380, 115656, 116920, 135420, 144570, 175380, 178303, 192760, 270840, 289140, 350760, 356606, 534909, 578280, 713212, 891515, 1069818, 1426424, 1783030, 2139636, 2674545, 3566060, 4279272, 5349090, 7132120, 10698180, 21396360]

約数ペア:

[(1, 21396360), (2, 10698180), (3, 7132120), (4, 5349090), (5, 4279272), (6, 3566060), (8, 2674545), (10, 2139636), (12, 1783030), (15, 1426424), (20, 1069818), (24, 891515), (30, 713212), (37, 578280), (40, 534909), (60, 356606), (61, 350760), (74, 289140), (79, 270840), (111, 192760), (120, 178303), (122, 175380), (148, 144570), (158, 135420), (183, 116920), (185, 115656), (222, 96380), (237, 90280), (244, 87690), (296, 72285), (305, 70152), (316, 67710), (366, 58460), (370, 57828), (395, 54168), (444, 48190), (474, 45140), (488, 43845), (555, 38552), (610, 35076), (632, 33855), (732, 29230), (740, 28914), (790, 27084), (888, 24095), (915, 23384), (948, 22570), (1110, 19276), (1185, 18056), (1220, 17538), (1464, 14615), (1480, 14457), (1580, 13542), (1830, 11692), (1896, 11285), (2220, 9638), (2257, 9480), (2370, 9028), (2440, 8769), (2923, 7320), (3160, 6771), (3660, 5846), (4440, 4819), (4514, 4740)]