81215614

素因数分解:

$2^1\times {\mathrm{19}}^2\times {\mathrm{197}}^1\times {\mathrm{571}}^1$

素因数の和:808

約数の個数: 24

約数和(自身を含む): 129451608

約数和(自身を除く): 48235994

約数列:

[1, 2, 19, 38, 197, 361, 394, 571, 722, 1142, 3743, 7486, 10849, 21698, 71117, 112487, 142234, 206131, 224974, 412262, 2137253, 4274506, 40607807, 81215614]

約数ペア:

[(1, 81215614), (2, 40607807), (19, 4274506), (38, 2137253), (197, 412262), (361, 224974), (394, 206131), (571, 142234), (722, 112487), (1142, 71117), (3743, 21698), (7486, 10849)]