21901740

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{52147}}^1$

素因数の和:52166

約数の個数: 48

約数和(自身を含む): 70086912

約数和(自身を除く): 48185172

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 52147, 104294, 156441, 208588, 260735, 312882, 365029, 521470, 625764, 730058, 782205, 1042940, 1095087, 1460116, 1564410, 1825145, 2190174, 3128820, 3650290, 4380348, 5475435, 7300580, 10950870, 21901740]

約数ペア:

[(1, 21901740), (2, 10950870), (3, 7300580), (4, 5475435), (5, 4380348), (6, 3650290), (7, 3128820), (10, 2190174), (12, 1825145), (14, 1564410), (15, 1460116), (20, 1095087), (21, 1042940), (28, 782205), (30, 730058), (35, 625764), (42, 521470), (60, 365029), (70, 312882), (84, 260735), (105, 208588), (140, 156441), (210, 104294), (420, 52147)]