21501039

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{229}}^1\times {\mathrm{263}}^1$

素因数の和:519

約数の個数: 32

約数和(自身を含む): 34974720

約数和(自身を除く): 13473681

約数列:

[1, 3, 7, 17, 21, 51, 119, 229, 263, 357, 687, 789, 1603, 1841, 3893, 4471, 4809, 5523, 11679, 13413, 27251, 31297, 60227, 81753, 93891, 180681, 421589, 1023859, 1264767, 3071577, 7167013, 21501039]

約数ペア:

[(1, 21501039), (3, 7167013), (7, 3071577), (17, 1264767), (21, 1023859), (51, 421589), (119, 180681), (229, 93891), (263, 81753), (357, 60227), (687, 31297), (789, 27251), (1603, 13413), (1841, 11679), (3893, 5523), (4471, 4809)]