19968588

素因数分解:

$2^2\times 3^2\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{617}}^1$

素因数の和:687

約数の個数: 72

約数和(自身を含む): 53988480

約数和(自身を除く): 34019892

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 29, 31, 36, 58, 62, 87, 93, 116, 124, 174, 186, 261, 279, 348, 372, 522, 558, 617, 899, 1044, 1116, 1234, 1798, 1851, 2468, 2697, 3596, 3702, 5394, 5553, 7404, 8091, 10788, 11106, 16182, 17893, 19127, 22212, 32364, 35786, 38254, 53679, 57381, 71572, 76508, 107358, 114762, 161037, 172143, 214716, 229524, 322074, 344286, 554683, 644148, 688572, 1109366, 1664049, 2218732, 3328098, 4992147, 6656196, 9984294, 19968588]

約数ペア:

[(1, 19968588), (2, 9984294), (3, 6656196), (4, 4992147), (6, 3328098), (9, 2218732), (12, 1664049), (18, 1109366), (29, 688572), (31, 644148), (36, 554683), (58, 344286), (62, 322074), (87, 229524), (93, 214716), (116, 172143), (124, 161037), (174, 114762), (186, 107358), (261, 76508), (279, 71572), (348, 57381), (372, 53679), (522, 38254), (558, 35786), (617, 32364), (899, 22212), (1044, 19127), (1116, 17893), (1234, 16182), (1798, 11106), (1851, 10788), (2468, 8091), (2697, 7404), (3596, 5553), (3702, 5394)]