About the Number

389945280

389945279 ← → 389945281

2進数表記:10111001111100001011111000000

漢数字表記:三億八千九百九十四万五千二百八十

素因数分解:

2 6 × 3 1 × 5 1 × 31 1 × 13103 1

素因数の和:13154
約数の個数: 112
約数和(自身を含む): 1278111744
約数和(自身を除く): 888166464

約数列:
[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 31, 32, 40, 48, 60, 62, 64, 80, 93, 96, 120, 124, 155, 160, 186, 192, 240, 248, 310, 320, 372, 465, 480, 496, 620, 744, 930, 960, 992, 1240, 1488, 1860, 1984, 2480, 2976, 3720, 4960, 5952, 7440, 9920, 13103, 14880, 26206, 29760, 39309, 52412, 65515, 78618, 104824, 131030, 157236, 196545, 209648, 262060, 314472, 393090, 406193, 419296, 524120, 628944, 786180, 812386, 838592, 1048240, 1218579, 1257888, 1572360, 1624772, 2030965, 2096480, 2437158, 2515776, 3144720, 3249544, 4061930, 4192960, 4874316, 6092895, 6289440, 6499088, 8123860, 9748632, 12185790, 12578880, 12998176, 16247720, 19497264, 24371580, 25996352, 32495440, 38994528, 48743160, 64990880, 77989056, 97486320, 129981760, 194972640, 389945280]

約数ペア:
[(1, 389945280), (2, 194972640), (3, 129981760), (4, 97486320), (5, 77989056), (6, 64990880), (8, 48743160), (10, 38994528), (12, 32495440), (15, 25996352), (16, 24371580), (20, 19497264), (24, 16247720), (30, 12998176), (31, 12578880), (32, 12185790), (40, 9748632), (48, 8123860), (60, 6499088), (62, 6289440), (64, 6092895), (80, 4874316), (93, 4192960), (96, 4061930), (120, 3249544), (124, 3144720), (155, 2515776), (160, 2437158), (186, 2096480), (192, 2030965), (240, 1624772), (248, 1572360), (310, 1257888), (320, 1218579), (372, 1048240), (465, 838592), (480, 812386), (496, 786180), (620, 628944), (744, 524120), (930, 419296), (960, 406193), (992, 393090), (1240, 314472), (1488, 262060), (1860, 209648), (1984, 196545), (2480, 157236), (2976, 131030), (3720, 104824), (4960, 78618), (5952, 65515), (7440, 52412), (9920, 39309), (13103, 29760), (14880, 26206)]

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