18165940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{641}}^1$

素因数の和:772

約数の個数: 48

約数和(自身を含む): 41524560

約数和(自身を除く): 23358620

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 109, 130, 218, 260, 436, 545, 641, 1090, 1282, 1417, 2180, 2564, 2834, 3205, 5668, 6410, 7085, 8333, 12820, 14170, 16666, 28340, 33332, 41665, 69869, 83330, 139738, 166660, 279476, 349345, 698690, 908297, 1397380, 1816594, 3633188, 4541485, 9082970, 18165940]

約数ペア:

[(1, 18165940), (2, 9082970), (4, 4541485), (5, 3633188), (10, 1816594), (13, 1397380), (20, 908297), (26, 698690), (52, 349345), (65, 279476), (109, 166660), (130, 139738), (218, 83330), (260, 69869), (436, 41665), (545, 33332), (641, 28340), (1090, 16666), (1282, 14170), (1417, 12820), (2180, 8333), (2564, 7085), (2834, 6410), (3205, 5668)]