20807009536

素因数分解:

$2^8\times {\mathrm{31}}^1\times {\mathrm{89}}^2\times {\mathrm{331}}^1$

素因数の和:556

約数の個数: 108

約数和(自身を含む): 43490629504

約数和(自身を除く): 22683619968

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 89, 124, 128, 178, 248, 256, 331, 356, 496, 662, 712, 992, 1324, 1424, 1984, 2648, 2759, 2848, 3968, 5296, 5518, 5696, 7921, 7936, 10261, 10592, 11036, 11392, 15842, 20522, 21184, 22072, 22784, 29459, 31684, 41044, 42368, 44144, 58918, 63368, 82088, 84736, 88288, 117836, 126736, 164176, 176576, 235672, 245551, 253472, 328352, 353152, 471344, 491102, 506944, 656704, 706304, 913229, 942688, 982204, 1013888, 1313408, 1826458, 1885376, 1964408, 2027776, 2621851, 2626816, 3652916, 3770752, 3928816, 5243702, 7305832, 7541504, 7857632, 10487404, 14611664, 15715264, 20974808, 29223328, 31430528, 41949616, 58446656, 62861056, 81277381, 83899232, 116893312, 162554762, 167798464, 233786624, 325109524, 335596928, 650219048, 671193856, 1300438096, 2600876192, 5201752384, 10403504768, 20807009536]

約数ペア:

[(1, 20807009536), (2, 10403504768), (4, 5201752384), (8, 2600876192), (16, 1300438096), (31, 671193856), (32, 650219048), (62, 335596928), (64, 325109524), (89, 233786624), (124, 167798464), (128, 162554762), (178, 116893312), (248, 83899232), (256, 81277381), (331, 62861056), (356, 58446656), (496, 41949616), (662, 31430528), (712, 29223328), (992, 20974808), (1324, 15715264), (1424, 14611664), (1984, 10487404), (2648, 7857632), (2759, 7541504), (2848, 7305832), (3968, 5243702), (5296, 3928816), (5518, 3770752), (5696, 3652916), (7921, 2626816), (7936, 2621851), (10261, 2027776), (10592, 1964408), (11036, 1885376), (11392, 1826458), (15842, 1313408), (20522, 1013888), (21184, 982204), (22072, 942688), (22784, 913229), (29459, 706304), (31684, 656704), (41044, 506944), (42368, 491102), (44144, 471344), (58918, 353152), (63368, 328352), (82088, 253472), (84736, 245551), (88288, 235672), (117836, 176576), (126736, 164176)]