20512971375

素因数分解:

$3^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{6037}}^1$

素因数の和:6126

約数の個数: 128

約数和(自身を含む): 39877463808

約数和(自身を除く): 19364492433

約数列:

[1, 3, 5, 13, 15, 17, 25, 39, 41, 51, 65, 75, 85, 123, 125, 195, 205, 221, 255, 325, 375, 425, 533, 615, 663, 697, 975, 1025, 1105, 1275, 1599, 1625, 2091, 2125, 2665, 3075, 3315, 3485, 4875, 5125, 5525, 6037, 6375, 7995, 9061, 10455, 13325, 15375, 16575, 17425, 18111, 27183, 27625, 30185, 39975, 45305, 52275, 66625, 78481, 82875, 87125, 90555, 102629, 135915, 150925, 199875, 226525, 235443, 247517, 261375, 307887, 392405, 452775, 513145, 679575, 742551, 754625, 1132625, 1177215, 1237585, 1334177, 1539435, 1962025, 2263875, 2565725, 3217721, 3397875, 3712755, 4002531, 4207789, 5886075, 6187925, 6670885, 7697175, 9653163, 9810125, 12623367, 12828625, 16088605, 18563775, 20012655, 21038945, 29430375, 30939625, 33354425, 38485875, 48265815, 54701257, 63116835, 80443025, 92818875, 100063275, 105194725, 164103771, 166772125, 241329075, 273506285, 315584175, 402215125, 500316375, 525973625, 820518855, 1206645375, 1367531425, 1577920875, 4102594275, 6837657125, 20512971375]

約数ペア:

[(1, 20512971375), (3, 6837657125), (5, 4102594275), (13, 1577920875), (15, 1367531425), (17, 1206645375), (25, 820518855), (39, 525973625), (41, 500316375), (51, 402215125), (65, 315584175), (75, 273506285), (85, 241329075), (123, 166772125), (125, 164103771), (195, 105194725), (205, 100063275), (221, 92818875), (255, 80443025), (325, 63116835), (375, 54701257), (425, 48265815), (533, 38485875), (615, 33354425), (663, 30939625), (697, 29430375), (975, 21038945), (1025, 20012655), (1105, 18563775), (1275, 16088605), (1599, 12828625), (1625, 12623367), (2091, 9810125), (2125, 9653163), (2665, 7697175), (3075, 6670885), (3315, 6187925), (3485, 5886075), (4875, 4207789), (5125, 4002531), (5525, 3712755), (6037, 3397875), (6375, 3217721), (7995, 2565725), (9061, 2263875), (10455, 1962025), (13325, 1539435), (15375, 1334177), (16575, 1237585), (17425, 1177215), (18111, 1132625), (27183, 754625), (27625, 742551), (30185, 679575), (39975, 513145), (45305, 452775), (52275, 392405), (66625, 307887), (78481, 261375), (82875, 247517), (87125, 235443), (90555, 226525), (102629, 199875), (135915, 150925)]