21241680

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{67}}^1\times {\mathrm{1321}}^1$

素因数の和:1404

約数の個数: 80

約数和(自身を含む): 66882624

約数和(自身を除く): 45640944

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 67, 80, 120, 134, 201, 240, 268, 335, 402, 536, 670, 804, 1005, 1072, 1321, 1340, 1608, 2010, 2642, 2680, 3216, 3963, 4020, 5284, 5360, 6605, 7926, 8040, 10568, 13210, 15852, 16080, 19815, 21136, 26420, 31704, 39630, 52840, 63408, 79260, 88507, 105680, 158520, 177014, 265521, 317040, 354028, 442535, 531042, 708056, 885070, 1062084, 1327605, 1416112, 1770140, 2124168, 2655210, 3540280, 4248336, 5310420, 7080560, 10620840, 21241680]

約数ペア:

[(1, 21241680), (2, 10620840), (3, 7080560), (4, 5310420), (5, 4248336), (6, 3540280), (8, 2655210), (10, 2124168), (12, 1770140), (15, 1416112), (16, 1327605), (20, 1062084), (24, 885070), (30, 708056), (40, 531042), (48, 442535), (60, 354028), (67, 317040), (80, 265521), (120, 177014), (134, 158520), (201, 105680), (240, 88507), (268, 79260), (335, 63408), (402, 52840), (536, 39630), (670, 31704), (804, 26420), (1005, 21136), (1072, 19815), (1321, 16080), (1340, 15852), (1608, 13210), (2010, 10568), (2642, 8040), (2680, 7926), (3216, 6605), (3963, 5360), (4020, 5284)]