21456340

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{34607}}^1$

素因数の和:34647

約数の個数: 24

約数和(自身を含む): 46513152

約数和(自身を除く): 25056812

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 34607, 69214, 138428, 173035, 346070, 692140, 1072817, 2145634, 4291268, 5364085, 10728170, 21456340]

約数ペア:

[(1, 21456340), (2, 10728170), (4, 5364085), (5, 4291268), (10, 2145634), (20, 1072817), (31, 692140), (62, 346070), (124, 173035), (155, 138428), (310, 69214), (620, 34607)]