161881020

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{128477}}^1$

素因数の和:128499

約数の個数: 72

約数和(自身を含む): 561191904

約数和(自身を除く): 399310884

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 128477, 256954, 385431, 513908, 642385, 770862, 899339, 1156293, 1284770, 1541724, 1798678, 1927155, 2312586, 2569540, 2698017, 3597356, 3854310, 4496695, 4625172, 5396034, 5781465, 7708620, 8094051, 8993390, 10792068, 11562930, 13490085, 16188102, 17986780, 23125860, 26980170, 32376204, 40470255, 53960340, 80940510, 161881020]

約数ペア:

[(1, 161881020), (2, 80940510), (3, 53960340), (4, 40470255), (5, 32376204), (6, 26980170), (7, 23125860), (9, 17986780), (10, 16188102), (12, 13490085), (14, 11562930), (15, 10792068), (18, 8993390), (20, 8094051), (21, 7708620), (28, 5781465), (30, 5396034), (35, 4625172), (36, 4496695), (42, 3854310), (45, 3597356), (60, 2698017), (63, 2569540), (70, 2312586), (84, 1927155), (90, 1798678), (105, 1541724), (126, 1284770), (140, 1156293), (180, 899339), (210, 770862), (252, 642385), (315, 513908), (420, 385431), (630, 256954), (1260, 128477)]