81243738

素因数分解:

$2^1\times 3^2\times {\mathrm{71}}^1\times {\mathrm{151}}^1\times {\mathrm{421}}^1$

素因数の和:651

約数の個数: 48

約数和(自身を含む): 180116352

約数和(自身を除く): 98872614

約数列:

[1, 2, 3, 6, 9, 18, 71, 142, 151, 213, 302, 421, 426, 453, 639, 842, 906, 1263, 1278, 1359, 2526, 2718, 3789, 7578, 10721, 21442, 29891, 32163, 59782, 63571, 64326, 89673, 96489, 127142, 179346, 190713, 192978, 269019, 381426, 538038, 572139, 1144278, 4513541, 9027082, 13540623, 27081246, 40621869, 81243738]

約数ペア:

[(1, 81243738), (2, 40621869), (3, 27081246), (6, 13540623), (9, 9027082), (18, 4513541), (71, 1144278), (142, 572139), (151, 538038), (213, 381426), (302, 269019), (421, 192978), (426, 190713), (453, 179346), (639, 127142), (842, 96489), (906, 89673), (1263, 64326), (1278, 63571), (1359, 59782), (2526, 32163), (2718, 29891), (3789, 21442), (7578, 10721)]