128798720

素因数分解:

$2^{12}\times 5^1\times {\mathrm{19}}^1\times {\mathrm{331}}^1$

素因数の和:379

約数の個数: 104

約数和(自身を含む): 326329440

約数和(自身を除く): 197530720

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 64, 76, 80, 95, 128, 152, 160, 190, 256, 304, 320, 331, 380, 512, 608, 640, 662, 760, 1024, 1216, 1280, 1324, 1520, 1655, 2048, 2432, 2560, 2648, 3040, 3310, 4096, 4864, 5120, 5296, 6080, 6289, 6620, 9728, 10240, 10592, 12160, 12578, 13240, 19456, 20480, 21184, 24320, 25156, 26480, 31445, 38912, 42368, 48640, 50312, 52960, 62890, 77824, 84736, 97280, 100624, 105920, 125780, 169472, 194560, 201248, 211840, 251560, 338944, 389120, 402496, 423680, 503120, 677888, 804992, 847360, 1006240, 1355776, 1609984, 1694720, 2012480, 3219968, 3389440, 4024960, 6439936, 6778880, 8049920, 12879872, 16099840, 25759744, 32199680, 64399360, 128798720]

約数ペア:

[(1, 128798720), (2, 64399360), (4, 32199680), (5, 25759744), (8, 16099840), (10, 12879872), (16, 8049920), (19, 6778880), (20, 6439936), (32, 4024960), (38, 3389440), (40, 3219968), (64, 2012480), (76, 1694720), (80, 1609984), (95, 1355776), (128, 1006240), (152, 847360), (160, 804992), (190, 677888), (256, 503120), (304, 423680), (320, 402496), (331, 389120), (380, 338944), (512, 251560), (608, 211840), (640, 201248), (662, 194560), (760, 169472), (1024, 125780), (1216, 105920), (1280, 100624), (1324, 97280), (1520, 84736), (1655, 77824), (2048, 62890), (2432, 52960), (2560, 50312), (2648, 48640), (3040, 42368), (3310, 38912), (4096, 31445), (4864, 26480), (5120, 25156), (5296, 24320), (6080, 21184), (6289, 20480), (6620, 19456), (9728, 13240), (10240, 12578), (10592, 12160)]