228739840

素因数分解:

$2^8\times 5^1\times 7^3\times {\mathrm{521}}^1$

素因数の和:563

約数の個数: 144

約数和(自身を含む): 640180800

約数和(自身を除く): 411440960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 64, 70, 80, 98, 112, 128, 140, 160, 196, 224, 245, 256, 280, 320, 343, 392, 448, 490, 521, 560, 640, 686, 784, 896, 980, 1042, 1120, 1280, 1372, 1568, 1715, 1792, 1960, 2084, 2240, 2605, 2744, 3136, 3430, 3647, 3920, 4168, 4480, 5210, 5488, 6272, 6860, 7294, 7840, 8336, 8960, 10420, 10976, 12544, 13720, 14588, 15680, 16672, 18235, 20840, 21952, 25529, 27440, 29176, 31360, 33344, 36470, 41680, 43904, 51058, 54880, 58352, 62720, 66688, 72940, 83360, 87808, 102116, 109760, 116704, 127645, 133376, 145880, 166720, 178703, 204232, 219520, 233408, 255290, 291760, 333440, 357406, 408464, 439040, 466816, 510580, 583520, 666880, 714812, 816928, 893515, 933632, 1021160, 1167040, 1429624, 1633856, 1787030, 2042320, 2334080, 2859248, 3267712, 3574060, 4084640, 4668160, 5718496, 6535424, 7148120, 8169280, 11436992, 14296240, 16338560, 22873984, 28592480, 32677120, 45747968, 57184960, 114369920, 228739840]

約数ペア:

[(1, 228739840), (2, 114369920), (4, 57184960), (5, 45747968), (7, 32677120), (8, 28592480), (10, 22873984), (14, 16338560), (16, 14296240), (20, 11436992), (28, 8169280), (32, 7148120), (35, 6535424), (40, 5718496), (49, 4668160), (56, 4084640), (64, 3574060), (70, 3267712), (80, 2859248), (98, 2334080), (112, 2042320), (128, 1787030), (140, 1633856), (160, 1429624), (196, 1167040), (224, 1021160), (245, 933632), (256, 893515), (280, 816928), (320, 714812), (343, 666880), (392, 583520), (448, 510580), (490, 466816), (521, 439040), (560, 408464), (640, 357406), (686, 333440), (784, 291760), (896, 255290), (980, 233408), (1042, 219520), (1120, 204232), (1280, 178703), (1372, 166720), (1568, 145880), (1715, 133376), (1792, 127645), (1960, 116704), (2084, 109760), (2240, 102116), (2605, 87808), (2744, 83360), (3136, 72940), (3430, 66688), (3647, 62720), (3920, 58352), (4168, 54880), (4480, 51058), (5210, 43904), (5488, 41680), (6272, 36470), (6860, 33344), (7294, 31360), (7840, 29176), (8336, 27440), (8960, 25529), (10420, 21952), (10976, 20840), (12544, 18235), (13720, 16672), (14588, 15680)]