21841360

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{8807}}^1$

素因数の和:8851

約数の個数: 40

約数和(自身を含む): 52425216

約数和(自身を除く): 30583856

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 8807, 17614, 35228, 44035, 70456, 88070, 140912, 176140, 273017, 352280, 546034, 704560, 1092068, 1365085, 2184136, 2730170, 4368272, 5460340, 10920680, 21841360]

約数ペア:

[(1, 21841360), (2, 10920680), (4, 5460340), (5, 4368272), (8, 2730170), (10, 2184136), (16, 1365085), (20, 1092068), (31, 704560), (40, 546034), (62, 352280), (80, 273017), (124, 176140), (155, 140912), (248, 88070), (310, 70456), (496, 44035), (620, 35228), (1240, 17614), (2480, 8807)]