28049720

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{101}}^1\times {\mathrm{131}}^1$

素因数の和:296

約数の個数: 64

約数和(自身を含む): 65435040

約数和(自身を除く): 37385320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 101, 106, 131, 202, 212, 262, 265, 404, 424, 505, 524, 530, 655, 808, 1010, 1048, 1060, 1310, 2020, 2120, 2620, 4040, 5240, 5353, 6943, 10706, 13231, 13886, 21412, 26462, 26765, 27772, 34715, 42824, 52924, 53530, 55544, 66155, 69430, 105848, 107060, 132310, 138860, 214120, 264620, 277720, 529240, 701243, 1402486, 2804972, 3506215, 5609944, 7012430, 14024860, 28049720]

約数ペア:

[(1, 28049720), (2, 14024860), (4, 7012430), (5, 5609944), (8, 3506215), (10, 2804972), (20, 1402486), (40, 701243), (53, 529240), (101, 277720), (106, 264620), (131, 214120), (202, 138860), (212, 132310), (262, 107060), (265, 105848), (404, 69430), (424, 66155), (505, 55544), (524, 53530), (530, 52924), (655, 42824), (808, 34715), (1010, 27772), (1048, 26765), (1060, 26462), (1310, 21412), (2020, 13886), (2120, 13231), (2620, 10706), (4040, 6943), (5240, 5353)]