18874144

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{839}}^1$

素因数の和:905

約数の個数: 48

約数和(自身を含む): 40219200

約数和(自身を除く): 21345056

約数列:

[1, 2, 4, 8, 16, 19, 32, 37, 38, 74, 76, 148, 152, 296, 304, 592, 608, 703, 839, 1184, 1406, 1678, 2812, 3356, 5624, 6712, 11248, 13424, 15941, 22496, 26848, 31043, 31882, 62086, 63764, 124172, 127528, 248344, 255056, 496688, 510112, 589817, 993376, 1179634, 2359268, 4718536, 9437072, 18874144]

約数ペア:

[(1, 18874144), (2, 9437072), (4, 4718536), (8, 2359268), (16, 1179634), (19, 993376), (32, 589817), (37, 510112), (38, 496688), (74, 255056), (76, 248344), (148, 127528), (152, 124172), (296, 63764), (304, 62086), (592, 31882), (608, 31043), (703, 26848), (839, 22496), (1184, 15941), (1406, 13424), (1678, 11248), (2812, 6712), (3356, 5624)]