20788908

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{379}}^1\times {\mathrm{653}}^1$

素因数の和:1046

約数の個数: 48

約数和(自身を含む): 55668480

約数和(自身を除く): 34879572

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 379, 653, 758, 1137, 1306, 1516, 1959, 2274, 2612, 2653, 3918, 4548, 4571, 5306, 7836, 7959, 9142, 10612, 13713, 15918, 18284, 27426, 31836, 54852, 247487, 494974, 742461, 989948, 1484922, 1732409, 2969844, 3464818, 5197227, 6929636, 10394454, 20788908]

約数ペア:

[(1, 20788908), (2, 10394454), (3, 6929636), (4, 5197227), (6, 3464818), (7, 2969844), (12, 1732409), (14, 1484922), (21, 989948), (28, 742461), (42, 494974), (84, 247487), (379, 54852), (653, 31836), (758, 27426), (1137, 18284), (1306, 15918), (1516, 13713), (1959, 10612), (2274, 9142), (2612, 7959), (2653, 7836), (3918, 5306), (4548, 4571)]