21249720

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{881}}^1$

素因数の和:965

約数の個数: 96

約数和(自身を含む): 70171920

約数和(自身を除く): 48922200

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 67, 72, 90, 120, 134, 180, 201, 268, 335, 360, 402, 536, 603, 670, 804, 881, 1005, 1206, 1340, 1608, 1762, 2010, 2412, 2643, 2680, 3015, 3524, 4020, 4405, 4824, 5286, 6030, 7048, 7929, 8040, 8810, 10572, 12060, 13215, 15858, 17620, 21144, 24120, 26430, 31716, 35240, 39645, 52860, 59027, 63432, 79290, 105720, 118054, 158580, 177081, 236108, 295135, 317160, 354162, 472216, 531243, 590270, 708324, 885405, 1062486, 1180540, 1416648, 1770810, 2124972, 2361080, 2656215, 3541620, 4249944, 5312430, 7083240, 10624860, 21249720]

約数ペア:

[(1, 21249720), (2, 10624860), (3, 7083240), (4, 5312430), (5, 4249944), (6, 3541620), (8, 2656215), (9, 2361080), (10, 2124972), (12, 1770810), (15, 1416648), (18, 1180540), (20, 1062486), (24, 885405), (30, 708324), (36, 590270), (40, 531243), (45, 472216), (60, 354162), (67, 317160), (72, 295135), (90, 236108), (120, 177081), (134, 158580), (180, 118054), (201, 105720), (268, 79290), (335, 63432), (360, 59027), (402, 52860), (536, 39645), (603, 35240), (670, 31716), (804, 26430), (881, 24120), (1005, 21144), (1206, 17620), (1340, 15858), (1608, 13215), (1762, 12060), (2010, 10572), (2412, 8810), (2643, 8040), (2680, 7929), (3015, 7048), (3524, 6030), (4020, 5286), (4405, 4824)]