18687708

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{547}}^1$

素因数の和:643

約数の個数: 72

約数和(自身を含む): 51663248

約数和(自身を除く): 32975540

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 73, 78, 117, 146, 156, 219, 234, 292, 438, 468, 547, 657, 876, 949, 1094, 1314, 1641, 1898, 2188, 2628, 2847, 3282, 3796, 4923, 5694, 6564, 7111, 8541, 9846, 11388, 14222, 17082, 19692, 21333, 28444, 34164, 39931, 42666, 63999, 79862, 85332, 119793, 127998, 159724, 239586, 255996, 359379, 479172, 519103, 718758, 1038206, 1437516, 1557309, 2076412, 3114618, 4671927, 6229236, 9343854, 18687708]

約数ペア:

[(1, 18687708), (2, 9343854), (3, 6229236), (4, 4671927), (6, 3114618), (9, 2076412), (12, 1557309), (13, 1437516), (18, 1038206), (26, 718758), (36, 519103), (39, 479172), (52, 359379), (73, 255996), (78, 239586), (117, 159724), (146, 127998), (156, 119793), (219, 85332), (234, 79862), (292, 63999), (438, 42666), (468, 39931), (547, 34164), (657, 28444), (876, 21333), (949, 19692), (1094, 17082), (1314, 14222), (1641, 11388), (1898, 9846), (2188, 8541), (2628, 7111), (2847, 6564), (3282, 5694), (3796, 4923)]