81347895

素因数分解:

$3^5\times 5^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1$

素因数の和:155

約数の個数: 96

約数和(自身を含む): 158505984

約数和(自身を除く): 77158089

約数列:

[1, 3, 5, 9, 15, 23, 27, 41, 45, 69, 71, 81, 115, 123, 135, 205, 207, 213, 243, 345, 355, 369, 405, 615, 621, 639, 943, 1035, 1065, 1107, 1215, 1633, 1845, 1863, 1917, 2829, 2911, 3105, 3195, 3321, 4715, 4899, 5535, 5589, 5751, 8165, 8487, 8733, 9315, 9585, 9963, 14145, 14555, 14697, 16605, 17253, 24495, 25461, 26199, 27945, 28755, 42435, 43665, 44091, 49815, 66953, 73485, 76383, 78597, 86265, 127305, 130995, 132273, 200859, 220455, 229149, 235791, 334765, 381915, 392985, 396819, 602577, 661365, 707373, 1004295, 1145745, 1178955, 1807731, 1984095, 3012885, 3536865, 5423193, 9038655, 16269579, 27115965, 81347895]

約数ペア:

[(1, 81347895), (3, 27115965), (5, 16269579), (9, 9038655), (15, 5423193), (23, 3536865), (27, 3012885), (41, 1984095), (45, 1807731), (69, 1178955), (71, 1145745), (81, 1004295), (115, 707373), (123, 661365), (135, 602577), (205, 396819), (207, 392985), (213, 381915), (243, 334765), (345, 235791), (355, 229149), (369, 220455), (405, 200859), (615, 132273), (621, 130995), (639, 127305), (943, 86265), (1035, 78597), (1065, 76383), (1107, 73485), (1215, 66953), (1633, 49815), (1845, 44091), (1863, 43665), (1917, 42435), (2829, 28755), (2911, 27945), (3105, 26199), (3195, 25461), (3321, 24495), (4715, 17253), (4899, 16605), (5535, 14697), (5589, 14555), (5751, 14145), (8165, 9963), (8487, 9585), (8733, 9315)]