18256940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1$

素因数の和:159

約数の個数: 96

約数和(自身を含む): 44706816

約数和(自身を除く): 26449876

約数列:

[1, 2, 4, 5, 10, 13, 20, 23, 26, 43, 46, 52, 65, 71, 86, 92, 115, 130, 142, 172, 215, 230, 260, 284, 299, 355, 430, 460, 559, 598, 710, 860, 923, 989, 1118, 1196, 1420, 1495, 1633, 1846, 1978, 2236, 2795, 2990, 3053, 3266, 3692, 3956, 4615, 4945, 5590, 5980, 6106, 6532, 8165, 9230, 9890, 11180, 12212, 12857, 15265, 16330, 18460, 19780, 21229, 25714, 30530, 32660, 39689, 42458, 51428, 61060, 64285, 70219, 79378, 84916, 106145, 128570, 140438, 158756, 198445, 212290, 257140, 280876, 351095, 396890, 424580, 702190, 793780, 912847, 1404380, 1825694, 3651388, 4564235, 9128470, 18256940]

約数ペア:

[(1, 18256940), (2, 9128470), (4, 4564235), (5, 3651388), (10, 1825694), (13, 1404380), (20, 912847), (23, 793780), (26, 702190), (43, 424580), (46, 396890), (52, 351095), (65, 280876), (71, 257140), (86, 212290), (92, 198445), (115, 158756), (130, 140438), (142, 128570), (172, 106145), (215, 84916), (230, 79378), (260, 70219), (284, 64285), (299, 61060), (355, 51428), (430, 42458), (460, 39689), (559, 32660), (598, 30530), (710, 25714), (860, 21229), (923, 19780), (989, 18460), (1118, 16330), (1196, 15265), (1420, 12857), (1495, 12212), (1633, 11180), (1846, 9890), (1978, 9230), (2236, 8165), (2795, 6532), (2990, 6106), (3053, 5980), (3266, 5590), (3692, 4945), (3956, 4615)]