321720

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{383}}^1$

素因数の和:404

約数の個数: 64

約数和(自身を含む): 1105920

約数和(自身を除く): 784200

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 383, 420, 766, 840, 1149, 1532, 1915, 2298, 2681, 3064, 3830, 4596, 5362, 5745, 7660, 8043, 9192, 10724, 11490, 13405, 15320, 16086, 21448, 22980, 26810, 32172, 40215, 45960, 53620, 64344, 80430, 107240, 160860, 321720]

約数ペア:

[(1, 321720), (2, 160860), (3, 107240), (4, 80430), (5, 64344), (6, 53620), (7, 45960), (8, 40215), (10, 32172), (12, 26810), (14, 22980), (15, 21448), (20, 16086), (21, 15320), (24, 13405), (28, 11490), (30, 10724), (35, 9192), (40, 8043), (42, 7660), (56, 5745), (60, 5362), (70, 4596), (84, 3830), (105, 3064), (120, 2681), (140, 2298), (168, 1915), (210, 1532), (280, 1149), (383, 840), (420, 766)]