9921940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{541}}^1$

素因数の和:688

約数の個数: 48

約数和(自身を含む): 24038784

約数和(自身を除く): 14116844

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 131, 140, 262, 524, 541, 655, 917, 1082, 1310, 1834, 2164, 2620, 2705, 3668, 3787, 4585, 5410, 7574, 9170, 10820, 15148, 18340, 18935, 37870, 70871, 75740, 141742, 283484, 354355, 496097, 708710, 992194, 1417420, 1984388, 2480485, 4960970, 9921940]

約数ペア:

[(1, 9921940), (2, 4960970), (4, 2480485), (5, 1984388), (7, 1417420), (10, 992194), (14, 708710), (20, 496097), (28, 354355), (35, 283484), (70, 141742), (131, 75740), (140, 70871), (262, 37870), (524, 18935), (541, 18340), (655, 15148), (917, 10820), (1082, 9170), (1310, 7574), (1834, 5410), (2164, 4585), (2620, 3787), (2705, 3668)]