21147784

素因数分解:

$2^3\times 7^1\times {\mathrm{101}}^1\times {\mathrm{3739}}^1$

素因数の和:3853

約数の個数: 32

約数和(自身を含む): 45777600

約数和(自身を除く): 24629816

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 101, 202, 404, 707, 808, 1414, 2828, 3739, 5656, 7478, 14956, 26173, 29912, 52346, 104692, 209384, 377639, 755278, 1510556, 2643473, 3021112, 5286946, 10573892, 21147784]

約数ペア:

[(1, 21147784), (2, 10573892), (4, 5286946), (7, 3021112), (8, 2643473), (14, 1510556), (28, 755278), (56, 377639), (101, 209384), (202, 104692), (404, 52346), (707, 29912), (808, 26173), (1414, 14956), (2828, 7478), (3739, 5656)]