19700499

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^3\times {\mathrm{61}}^1$

素因数の和:117

約数の個数: 48

約数和(自身を含む): 33643680

約数和(自身を除く): 13943181

約数列:

[1, 3, 7, 13, 21, 39, 49, 61, 91, 147, 169, 183, 273, 427, 507, 637, 793, 1183, 1281, 1911, 2197, 2379, 2989, 3549, 5551, 6591, 8281, 8967, 10309, 15379, 16653, 24843, 30927, 38857, 46137, 72163, 107653, 116571, 134017, 216489, 322959, 402051, 505141, 938119, 1515423, 2814357, 6566833, 19700499]

約数ペア:

[(1, 19700499), (3, 6566833), (7, 2814357), (13, 1515423), (21, 938119), (39, 505141), (49, 402051), (61, 322959), (91, 216489), (147, 134017), (169, 116571), (183, 107653), (273, 72163), (427, 46137), (507, 38857), (637, 30927), (793, 24843), (1183, 16653), (1281, 15379), (1911, 10309), (2197, 8967), (2379, 8281), (2989, 6591), (3549, 5551)]