20416316440

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{227}}^1\times {\mathrm{257}}^1\times {\mathrm{673}}^1$

素因数の和:1181

約数の個数: 128

約数和(自身を含む): 49955693760

約数和(自身を除く): 29539377320

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 227, 257, 260, 454, 514, 520, 673, 908, 1028, 1135, 1285, 1346, 1816, 2056, 2270, 2570, 2692, 2951, 3341, 3365, 4540, 5140, 5384, 5902, 6682, 6730, 8749, 9080, 10280, 11804, 13364, 13460, 14755, 16705, 17498, 23608, 26728, 26920, 29510, 33410, 34996, 43745, 58339, 59020, 66820, 69992, 87490, 116678, 118040, 133640, 152771, 172961, 174980, 233356, 291695, 305542, 345922, 349960, 466712, 583390, 611084, 691844, 758407, 763855, 864805, 1166780, 1222168, 1383688, 1516814, 1527710, 1729610, 1986023, 2248493, 2333560, 3033628, 3055420, 3459220, 3792035, 3972046, 4496986, 6067256, 6110840, 6918440, 7584070, 7944092, 8993972, 9930115, 11242465, 15168140, 15888184, 17987944, 19860230, 22484930, 30336280, 39262147, 39720460, 44969860, 78524294, 79440920, 89939720, 157048588, 196310735, 314097176, 392621470, 510407911, 785242940, 1020815822, 1570485880, 2041631644, 2552039555, 4083263288, 5104079110, 10208158220, 20416316440]

約数ペア:

[(1, 20416316440), (2, 10208158220), (4, 5104079110), (5, 4083263288), (8, 2552039555), (10, 2041631644), (13, 1570485880), (20, 1020815822), (26, 785242940), (40, 510407911), (52, 392621470), (65, 314097176), (104, 196310735), (130, 157048588), (227, 89939720), (257, 79440920), (260, 78524294), (454, 44969860), (514, 39720460), (520, 39262147), (673, 30336280), (908, 22484930), (1028, 19860230), (1135, 17987944), (1285, 15888184), (1346, 15168140), (1816, 11242465), (2056, 9930115), (2270, 8993972), (2570, 7944092), (2692, 7584070), (2951, 6918440), (3341, 6110840), (3365, 6067256), (4540, 4496986), (5140, 3972046), (5384, 3792035), (5902, 3459220), (6682, 3055420), (6730, 3033628), (8749, 2333560), (9080, 2248493), (10280, 1986023), (11804, 1729610), (13364, 1527710), (13460, 1516814), (14755, 1383688), (16705, 1222168), (17498, 1166780), (23608, 864805), (26728, 763855), (26920, 758407), (29510, 691844), (33410, 611084), (34996, 583390), (43745, 466712), (58339, 349960), (59020, 345922), (66820, 305542), (69992, 291695), (87490, 233356), (116678, 174980), (118040, 172961), (133640, 152771)]