421072640

素因数分解:

$2^8\times 5^1\times {\mathrm{313}}^1\times {\mathrm{1051}}^1$

素因数の和:1385

約数の個数: 72

約数和(自身を含む): 1012785648

約数和(自身を除く): 591713008

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 313, 320, 626, 640, 1051, 1252, 1280, 1565, 2102, 2504, 3130, 4204, 5008, 5255, 6260, 8408, 10016, 10510, 12520, 16816, 20032, 21020, 25040, 33632, 40064, 42040, 50080, 67264, 80128, 84080, 100160, 134528, 168160, 200320, 269056, 328963, 336320, 400640, 657926, 672640, 1315852, 1345280, 1644815, 2631704, 3289630, 5263408, 6579260, 10526816, 13158520, 21053632, 26317040, 42107264, 52634080, 84214528, 105268160, 210536320, 421072640]

約数ペア:

[(1, 421072640), (2, 210536320), (4, 105268160), (5, 84214528), (8, 52634080), (10, 42107264), (16, 26317040), (20, 21053632), (32, 13158520), (40, 10526816), (64, 6579260), (80, 5263408), (128, 3289630), (160, 2631704), (256, 1644815), (313, 1345280), (320, 1315852), (626, 672640), (640, 657926), (1051, 400640), (1252, 336320), (1280, 328963), (1565, 269056), (2102, 200320), (2504, 168160), (3130, 134528), (4204, 100160), (5008, 84080), (5255, 80128), (6260, 67264), (8408, 50080), (10016, 42040), (10510, 40064), (12520, 33632), (16816, 25040), (20032, 21020)]