81788940

素因数分解:

$2^2\times 3^5\times 5^1\times {\mathrm{16829}}^1$

素因数の和:16853

約数の個数: 72

約数和(自身を含む): 257297040

約数和(自身を除く): 175508100

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 135, 162, 180, 243, 270, 324, 405, 486, 540, 810, 972, 1215, 1620, 2430, 4860, 16829, 33658, 50487, 67316, 84145, 100974, 151461, 168290, 201948, 252435, 302922, 336580, 454383, 504870, 605844, 757305, 908766, 1009740, 1363149, 1514610, 1817532, 2271915, 2726298, 3029220, 4089447, 4543830, 5452596, 6815745, 8178894, 9087660, 13631490, 16357788, 20447235, 27262980, 40894470, 81788940]

約数ペア:

[(1, 81788940), (2, 40894470), (3, 27262980), (4, 20447235), (5, 16357788), (6, 13631490), (9, 9087660), (10, 8178894), (12, 6815745), (15, 5452596), (18, 4543830), (20, 4089447), (27, 3029220), (30, 2726298), (36, 2271915), (45, 1817532), (54, 1514610), (60, 1363149), (81, 1009740), (90, 908766), (108, 757305), (135, 605844), (162, 504870), (180, 454383), (243, 336580), (270, 302922), (324, 252435), (405, 201948), (486, 168290), (540, 151461), (810, 100974), (972, 84145), (1215, 67316), (1620, 50487), (2430, 33658), (4860, 16829)]