21856250

素因数分解:

$2^1\times 5^5\times {\mathrm{13}}^1\times {\mathrm{269}}^1$

素因数の和:309

約数の個数: 48

約数和(自身を含む): 44294040

約数和(自身を除く): 22437790

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 125, 130, 250, 269, 325, 538, 625, 650, 1250, 1345, 1625, 2690, 3125, 3250, 3497, 6250, 6725, 6994, 8125, 13450, 16250, 17485, 33625, 34970, 40625, 67250, 81250, 87425, 168125, 174850, 336250, 437125, 840625, 874250, 1681250, 2185625, 4371250, 10928125, 21856250]

約数ペア:

[(1, 21856250), (2, 10928125), (5, 4371250), (10, 2185625), (13, 1681250), (25, 874250), (26, 840625), (50, 437125), (65, 336250), (125, 174850), (130, 168125), (250, 87425), (269, 81250), (325, 67250), (538, 40625), (625, 34970), (650, 33625), (1250, 17485), (1345, 16250), (1625, 13450), (2690, 8125), (3125, 6994), (3250, 6725), (3497, 6250)]