27650927620

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{409}}^1\times {\mathrm{1999}}^1$

素因数の和:2525

約数の個数: 96

約数和(自身を含む): 61992000000

約数和(自身を除く): 34341072380

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 89, 95, 178, 190, 356, 380, 409, 445, 818, 890, 1636, 1691, 1780, 1999, 2045, 3382, 3998, 4090, 6764, 7771, 7996, 8180, 8455, 9995, 15542, 16910, 19990, 31084, 33820, 36401, 37981, 38855, 39980, 72802, 75962, 77710, 145604, 151924, 155420, 177911, 182005, 189905, 355822, 364010, 379810, 691619, 711644, 728020, 759620, 817591, 889555, 1383238, 1635182, 1779110, 2766476, 3270364, 3380309, 3458095, 3558220, 4087955, 6760618, 6916190, 8175910, 13521236, 13832380, 15534229, 16351820, 16901545, 31068458, 33803090, 62136916, 67606180, 72765599, 77671145, 145531198, 155342290, 291062396, 310684580, 363827995, 727655990, 1382546381, 1455311980, 2765092762, 5530185524, 6912731905, 13825463810, 27650927620]

約数ペア:

[(1, 27650927620), (2, 13825463810), (4, 6912731905), (5, 5530185524), (10, 2765092762), (19, 1455311980), (20, 1382546381), (38, 727655990), (76, 363827995), (89, 310684580), (95, 291062396), (178, 155342290), (190, 145531198), (356, 77671145), (380, 72765599), (409, 67606180), (445, 62136916), (818, 33803090), (890, 31068458), (1636, 16901545), (1691, 16351820), (1780, 15534229), (1999, 13832380), (2045, 13521236), (3382, 8175910), (3998, 6916190), (4090, 6760618), (6764, 4087955), (7771, 3558220), (7996, 3458095), (8180, 3380309), (8455, 3270364), (9995, 2766476), (15542, 1779110), (16910, 1635182), (19990, 1383238), (31084, 889555), (33820, 817591), (36401, 759620), (37981, 728020), (38855, 711644), (39980, 691619), (72802, 379810), (75962, 364010), (77710, 355822), (145604, 189905), (151924, 182005), (155420, 177911)]