20970756

素因数分解:

$2^2\times 3^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1$

素因数の和:126

約数の個数: 144

約数和(自身を含む): 61501440

約数和(自身を除く): 40530684

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 19, 23, 31, 36, 38, 43, 46, 57, 62, 69, 76, 86, 92, 93, 114, 124, 129, 138, 171, 172, 186, 207, 228, 258, 276, 279, 342, 372, 387, 414, 437, 516, 558, 589, 684, 713, 774, 817, 828, 874, 989, 1116, 1178, 1311, 1333, 1426, 1548, 1634, 1748, 1767, 1978, 2139, 2356, 2451, 2622, 2666, 2852, 2967, 3268, 3534, 3933, 3956, 3999, 4278, 4902, 5244, 5301, 5332, 5934, 6417, 7068, 7353, 7866, 7998, 8556, 8901, 9804, 10602, 11868, 11997, 12834, 13547, 14706, 15732, 15996, 17802, 18791, 21204, 23994, 25327, 25668, 27094, 29412, 30659, 35604, 37582, 40641, 47988, 50654, 54188, 56373, 61318, 75164, 75981, 81282, 91977, 101308, 112746, 121923, 122636, 151962, 162564, 169119, 183954, 225492, 227943, 243846, 275931, 303924, 338238, 367908, 455886, 487692, 551862, 582521, 676476, 911772, 1103724, 1165042, 1747563, 2330084, 3495126, 5242689, 6990252, 10485378, 20970756]

約数ペア:

[(1, 20970756), (2, 10485378), (3, 6990252), (4, 5242689), (6, 3495126), (9, 2330084), (12, 1747563), (18, 1165042), (19, 1103724), (23, 911772), (31, 676476), (36, 582521), (38, 551862), (43, 487692), (46, 455886), (57, 367908), (62, 338238), (69, 303924), (76, 275931), (86, 243846), (92, 227943), (93, 225492), (114, 183954), (124, 169119), (129, 162564), (138, 151962), (171, 122636), (172, 121923), (186, 112746), (207, 101308), (228, 91977), (258, 81282), (276, 75981), (279, 75164), (342, 61318), (372, 56373), (387, 54188), (414, 50654), (437, 47988), (516, 40641), (558, 37582), (589, 35604), (684, 30659), (713, 29412), (774, 27094), (817, 25668), (828, 25327), (874, 23994), (989, 21204), (1116, 18791), (1178, 17802), (1311, 15996), (1333, 15732), (1426, 14706), (1548, 13547), (1634, 12834), (1748, 11997), (1767, 11868), (1978, 10602), (2139, 9804), (2356, 8901), (2451, 8556), (2622, 7998), (2666, 7866), (2852, 7353), (2967, 7068), (3268, 6417), (3534, 5934), (3933, 5332), (3956, 5301), (3999, 5244), (4278, 4902)]