21984240

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{139}}^1\times {\mathrm{659}}^1$

素因数の和:814

約数の個数: 80

約数和(自身を含む): 68745600

約数和(自身を除く): 46761360

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 139, 240, 278, 417, 556, 659, 695, 834, 1112, 1318, 1390, 1668, 1977, 2085, 2224, 2636, 2780, 3295, 3336, 3954, 4170, 5272, 5560, 6590, 6672, 7908, 8340, 9885, 10544, 11120, 13180, 15816, 16680, 19770, 26360, 31632, 33360, 39540, 52720, 79080, 91601, 158160, 183202, 274803, 366404, 458005, 549606, 732808, 916010, 1099212, 1374015, 1465616, 1832020, 2198424, 2748030, 3664040, 4396848, 5496060, 7328080, 10992120, 21984240]

約数ペア:

[(1, 21984240), (2, 10992120), (3, 7328080), (4, 5496060), (5, 4396848), (6, 3664040), (8, 2748030), (10, 2198424), (12, 1832020), (15, 1465616), (16, 1374015), (20, 1099212), (24, 916010), (30, 732808), (40, 549606), (48, 458005), (60, 366404), (80, 274803), (120, 183202), (139, 158160), (240, 91601), (278, 79080), (417, 52720), (556, 39540), (659, 33360), (695, 31632), (834, 26360), (1112, 19770), (1318, 16680), (1390, 15816), (1668, 13180), (1977, 11120), (2085, 10544), (2224, 9885), (2636, 8340), (2780, 7908), (3295, 6672), (3336, 6590), (3954, 5560), (4170, 5272)]