21974820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{52321}}^1$

素因数の和:52340

約数の個数: 48

約数和(自身を含む): 70320768

約数和(自身を除く): 48345948

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, 52321, 104642, 156963, 209284, 261605, 313926, 366247, 523210, 627852, 732494, 784815, 1046420, 1098741, 1464988, 1569630, 1831235, 2197482, 3139260, 3662470, 4394964, 5493705, 7324940, 10987410, 21974820]

約数ペア:

[(1, 21974820), (2, 10987410), (3, 7324940), (4, 5493705), (5, 4394964), (6, 3662470), (7, 3139260), (10, 2197482), (12, 1831235), (14, 1569630), (15, 1464988), (20, 1098741), (21, 1046420), (28, 784815), (30, 732494), (35, 627852), (42, 523210), (60, 366247), (70, 313926), (84, 261605), (105, 209284), (140, 156963), (210, 104642), (420, 52321)]