19720928

素因数分解:

$2^5\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{269}}^1$

素因数の和:387

約数の個数: 48

約数和(自身を含む): 40824000

約数和(自身を除く): 21103072

約数列:

[1, 2, 4, 8, 16, 29, 32, 58, 79, 116, 158, 232, 269, 316, 464, 538, 632, 928, 1076, 1264, 2152, 2291, 2528, 4304, 4582, 7801, 8608, 9164, 15602, 18328, 21251, 31204, 36656, 42502, 62408, 73312, 85004, 124816, 170008, 249632, 340016, 616279, 680032, 1232558, 2465116, 4930232, 9860464, 19720928]

約数ペア:

[(1, 19720928), (2, 9860464), (4, 4930232), (8, 2465116), (16, 1232558), (29, 680032), (32, 616279), (58, 340016), (79, 249632), (116, 170008), (158, 124816), (232, 85004), (269, 73312), (316, 62408), (464, 42502), (538, 36656), (632, 31204), (928, 21251), (1076, 18328), (1264, 15602), (2152, 9164), (2291, 8608), (2528, 7801), (4304, 4582)]