18125235

素因数分解:

$3^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1$

素因数の和:177

約数の個数: 64

約数和(自身を含む): 34283520

約数和(自身を除く): 16158285

約数列:

[1, 3, 5, 9, 15, 27, 31, 45, 61, 71, 93, 135, 155, 183, 213, 279, 305, 355, 465, 549, 639, 837, 915, 1065, 1395, 1647, 1891, 1917, 2201, 2745, 3195, 4185, 4331, 5673, 6603, 8235, 9455, 9585, 11005, 12993, 17019, 19809, 21655, 28365, 33015, 38979, 51057, 59427, 64965, 85095, 99045, 116937, 134261, 194895, 255285, 297135, 402783, 584685, 671305, 1208349, 2013915, 3625047, 6041745, 18125235]

約数ペア:

[(1, 18125235), (3, 6041745), (5, 3625047), (9, 2013915), (15, 1208349), (27, 671305), (31, 584685), (45, 402783), (61, 297135), (71, 255285), (93, 194895), (135, 134261), (155, 116937), (183, 99045), (213, 85095), (279, 64965), (305, 59427), (355, 51057), (465, 38979), (549, 33015), (639, 28365), (837, 21655), (915, 19809), (1065, 17019), (1395, 12993), (1647, 11005), (1891, 9585), (1917, 9455), (2201, 8235), (2745, 6603), (3195, 5673), (4185, 4331)]