221188720

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{89189}}^1$

素因数の和:89233

約数の個数: 40

約数和(自身を含む): 530858880

約数和(自身を除く): 309670160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 89189, 178378, 356756, 445945, 713512, 891890, 1427024, 1783780, 2764859, 3567560, 5529718, 7135120, 11059436, 13824295, 22118872, 27648590, 44237744, 55297180, 110594360, 221188720]

約数ペア:

[(1, 221188720), (2, 110594360), (4, 55297180), (5, 44237744), (8, 27648590), (10, 22118872), (16, 13824295), (20, 11059436), (31, 7135120), (40, 5529718), (62, 3567560), (80, 2764859), (124, 1783780), (155, 1427024), (248, 891890), (310, 713512), (496, 445945), (620, 356756), (1240, 178378), (2480, 89189)]