205718100

素因数分解:

$2^2\times 3^1\times 5^2\times 7^1\times {\mathrm{97961}}^1$

素因数の和:97985

約数の個数: 72

約数和(自身を含む): 680248128

約数和(自身を除く): 474530028

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 25, 28, 30, 35, 42, 50, 60, 70, 75, 84, 100, 105, 140, 150, 175, 210, 300, 350, 420, 525, 700, 1050, 2100, 97961, 195922, 293883, 391844, 489805, 587766, 685727, 979610, 1175532, 1371454, 1469415, 1959220, 2057181, 2449025, 2742908, 2938830, 3428635, 4114362, 4898050, 5877660, 6857270, 7347075, 8228724, 9796100, 10285905, 13714540, 14694150, 17143175, 20571810, 29388300, 34286350, 41143620, 51429525, 68572700, 102859050, 205718100]

約数ペア:

[(1, 205718100), (2, 102859050), (3, 68572700), (4, 51429525), (5, 41143620), (6, 34286350), (7, 29388300), (10, 20571810), (12, 17143175), (14, 14694150), (15, 13714540), (20, 10285905), (21, 9796100), (25, 8228724), (28, 7347075), (30, 6857270), (35, 5877660), (42, 4898050), (50, 4114362), (60, 3428635), (70, 2938830), (75, 2742908), (84, 2449025), (100, 2057181), (105, 1959220), (140, 1469415), (150, 1371454), (175, 1175532), (210, 979610), (300, 685727), (350, 587766), (420, 489805), (525, 391844), (700, 293883), (1050, 195922), (2100, 97961)]