19881360

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{521}}^1$

素因数の和:593

約数の個数: 120

約数和(自身を含む): 68158584

約数和(自身を除く): 48277224

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 53, 60, 72, 80, 90, 106, 120, 144, 159, 180, 212, 240, 265, 318, 360, 424, 477, 521, 530, 636, 720, 795, 848, 954, 1042, 1060, 1272, 1563, 1590, 1908, 2084, 2120, 2385, 2544, 2605, 3126, 3180, 3816, 4168, 4240, 4689, 4770, 5210, 6252, 6360, 7632, 7815, 8336, 9378, 9540, 10420, 12504, 12720, 15630, 18756, 19080, 20840, 23445, 25008, 27613, 31260, 37512, 38160, 41680, 46890, 55226, 62520, 75024, 82839, 93780, 110452, 125040, 138065, 165678, 187560, 220904, 248517, 276130, 331356, 375120, 414195, 441808, 497034, 552260, 662712, 828390, 994068, 1104520, 1242585, 1325424, 1656780, 1988136, 2209040, 2485170, 3313560, 3976272, 4970340, 6627120, 9940680, 19881360]

約数ペア:

[(1, 19881360), (2, 9940680), (3, 6627120), (4, 4970340), (5, 3976272), (6, 3313560), (8, 2485170), (9, 2209040), (10, 1988136), (12, 1656780), (15, 1325424), (16, 1242585), (18, 1104520), (20, 994068), (24, 828390), (30, 662712), (36, 552260), (40, 497034), (45, 441808), (48, 414195), (53, 375120), (60, 331356), (72, 276130), (80, 248517), (90, 220904), (106, 187560), (120, 165678), (144, 138065), (159, 125040), (180, 110452), (212, 93780), (240, 82839), (265, 75024), (318, 62520), (360, 55226), (424, 46890), (477, 41680), (521, 38160), (530, 37512), (636, 31260), (720, 27613), (795, 25008), (848, 23445), (954, 20840), (1042, 19080), (1060, 18756), (1272, 15630), (1563, 12720), (1590, 12504), (1908, 10420), (2084, 9540), (2120, 9378), (2385, 8336), (2544, 7815), (2605, 7632), (3126, 6360), (3180, 6252), (3816, 5210), (4168, 4770), (4240, 4689)]