20157936

素因数分解:

$2^4\times 3^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^2$

素因数の和:115

約数の個数: 120

約数和(自身を含む): 59103360

約数和(自身を除く): 38945424

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 19, 23, 24, 31, 38, 46, 48, 57, 62, 69, 76, 92, 93, 114, 124, 138, 152, 184, 186, 228, 248, 276, 304, 368, 372, 437, 456, 496, 552, 589, 713, 744, 874, 912, 961, 1104, 1178, 1311, 1426, 1488, 1748, 1767, 1922, 2139, 2356, 2622, 2852, 2883, 3496, 3534, 3844, 4278, 4712, 5244, 5704, 5766, 6992, 7068, 7688, 8556, 9424, 10488, 11408, 11532, 13547, 14136, 15376, 17112, 18259, 20976, 22103, 23064, 27094, 28272, 34224, 36518, 40641, 44206, 46128, 54188, 54777, 66309, 73036, 81282, 88412, 108376, 109554, 132618, 146072, 162564, 176824, 216752, 219108, 265236, 292144, 325128, 353648, 419957, 438216, 530472, 650256, 839914, 876432, 1060944, 1259871, 1679828, 2519742, 3359656, 5039484, 6719312, 10078968, 20157936]

約数ペア:

[(1, 20157936), (2, 10078968), (3, 6719312), (4, 5039484), (6, 3359656), (8, 2519742), (12, 1679828), (16, 1259871), (19, 1060944), (23, 876432), (24, 839914), (31, 650256), (38, 530472), (46, 438216), (48, 419957), (57, 353648), (62, 325128), (69, 292144), (76, 265236), (92, 219108), (93, 216752), (114, 176824), (124, 162564), (138, 146072), (152, 132618), (184, 109554), (186, 108376), (228, 88412), (248, 81282), (276, 73036), (304, 66309), (368, 54777), (372, 54188), (437, 46128), (456, 44206), (496, 40641), (552, 36518), (589, 34224), (713, 28272), (744, 27094), (874, 23064), (912, 22103), (961, 20976), (1104, 18259), (1178, 17112), (1311, 15376), (1426, 14136), (1488, 13547), (1748, 11532), (1767, 11408), (1922, 10488), (2139, 9424), (2356, 8556), (2622, 7688), (2852, 7068), (2883, 6992), (3496, 5766), (3534, 5704), (3844, 5244), (4278, 4712)]