81395964

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{173923}}^1$

素因数の和:173946

約数の個数: 36

約数和(自身を含む): 221579176

約数和(自身を除く): 140183212

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 156, 234, 468, 173923, 347846, 521769, 695692, 1043538, 1565307, 2087076, 2260999, 3130614, 4521998, 6261228, 6782997, 9043996, 13565994, 20348991, 27131988, 40697982, 81395964]

約数ペア:

[(1, 81395964), (2, 40697982), (3, 27131988), (4, 20348991), (6, 13565994), (9, 9043996), (12, 6782997), (13, 6261228), (18, 4521998), (26, 3130614), (36, 2260999), (39, 2087076), (52, 1565307), (78, 1043538), (117, 695692), (156, 521769), (234, 347846), (468, 173923)]