491998520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{1327}}^1$

素因数の和:1405

約数の個数: 128

約数和(自身を含む): 1285079040

約数和(自身を除く): 793080520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 23, 26, 31, 40, 46, 52, 62, 65, 92, 104, 115, 124, 130, 155, 184, 230, 248, 260, 299, 310, 403, 460, 520, 598, 620, 713, 806, 920, 1196, 1240, 1327, 1426, 1495, 1612, 2015, 2392, 2654, 2852, 2990, 3224, 3565, 4030, 5308, 5704, 5980, 6635, 7130, 8060, 9269, 10616, 11960, 13270, 14260, 16120, 17251, 18538, 26540, 28520, 30521, 34502, 37076, 41137, 46345, 53080, 61042, 69004, 74152, 82274, 86255, 92690, 122084, 138008, 152605, 164548, 172510, 185380, 205685, 244168, 305210, 329096, 345020, 370760, 396773, 411370, 534781, 610420, 690040, 793546, 822740, 946151, 1069562, 1220840, 1587092, 1645480, 1892302, 1983865, 2139124, 2673905, 3174184, 3784604, 3967730, 4278248, 4730755, 5347810, 7569208, 7935460, 9461510, 10695620, 12299963, 15870920, 18923020, 21391240, 24599926, 37846040, 49199852, 61499815, 98399704, 122999630, 245999260, 491998520]

約数ペア:

[(1, 491998520), (2, 245999260), (4, 122999630), (5, 98399704), (8, 61499815), (10, 49199852), (13, 37846040), (20, 24599926), (23, 21391240), (26, 18923020), (31, 15870920), (40, 12299963), (46, 10695620), (52, 9461510), (62, 7935460), (65, 7569208), (92, 5347810), (104, 4730755), (115, 4278248), (124, 3967730), (130, 3784604), (155, 3174184), (184, 2673905), (230, 2139124), (248, 1983865), (260, 1892302), (299, 1645480), (310, 1587092), (403, 1220840), (460, 1069562), (520, 946151), (598, 822740), (620, 793546), (713, 690040), (806, 610420), (920, 534781), (1196, 411370), (1240, 396773), (1327, 370760), (1426, 345020), (1495, 329096), (1612, 305210), (2015, 244168), (2392, 205685), (2654, 185380), (2852, 172510), (2990, 164548), (3224, 152605), (3565, 138008), (4030, 122084), (5308, 92690), (5704, 86255), (5980, 82274), (6635, 74152), (7130, 69004), (8060, 61042), (9269, 53080), (10616, 46345), (11960, 41137), (13270, 37076), (14260, 34502), (16120, 30521), (17251, 28520), (18538, 26540)]