19721164480

素因数分解:

$2^6\times 5^1\times {\mathrm{71}}^1\times {\mathrm{281}}^1\times {\mathrm{3089}}^1$

素因数の和:3458

約数の個数: 112

約数和(自身を含む): 47807392320

約数和(自身を除く): 28086227840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 71, 80, 142, 160, 281, 284, 320, 355, 562, 568, 710, 1124, 1136, 1405, 1420, 2248, 2272, 2810, 2840, 3089, 4496, 4544, 5620, 5680, 6178, 8992, 11240, 11360, 12356, 15445, 17984, 19951, 22480, 22720, 24712, 30890, 39902, 44960, 49424, 61780, 79804, 89920, 98848, 99755, 123560, 159608, 197696, 199510, 219319, 247120, 319216, 399020, 438638, 494240, 638432, 798040, 868009, 877276, 988480, 1096595, 1276864, 1596080, 1736018, 1754552, 2193190, 3192160, 3472036, 3509104, 4340045, 4386380, 6384320, 6944072, 7018208, 8680090, 8772760, 13888144, 14036416, 17360180, 17545520, 27776288, 34720360, 35091040, 55552576, 61628639, 69440720, 70182080, 123257278, 138881440, 246514556, 277762880, 308143195, 493029112, 616286390, 986058224, 1232572780, 1972116448, 2465145560, 3944232896, 4930291120, 9860582240, 19721164480]

約数ペア:

[(1, 19721164480), (2, 9860582240), (4, 4930291120), (5, 3944232896), (8, 2465145560), (10, 1972116448), (16, 1232572780), (20, 986058224), (32, 616286390), (40, 493029112), (64, 308143195), (71, 277762880), (80, 246514556), (142, 138881440), (160, 123257278), (281, 70182080), (284, 69440720), (320, 61628639), (355, 55552576), (562, 35091040), (568, 34720360), (710, 27776288), (1124, 17545520), (1136, 17360180), (1405, 14036416), (1420, 13888144), (2248, 8772760), (2272, 8680090), (2810, 7018208), (2840, 6944072), (3089, 6384320), (4496, 4386380), (4544, 4340045), (5620, 3509104), (5680, 3472036), (6178, 3192160), (8992, 2193190), (11240, 1754552), (11360, 1736018), (12356, 1596080), (15445, 1276864), (17984, 1096595), (19951, 988480), (22480, 877276), (22720, 868009), (24712, 798040), (30890, 638432), (39902, 494240), (44960, 438638), (49424, 399020), (61780, 319216), (79804, 247120), (89920, 219319), (98848, 199510), (99755, 197696), (123560, 159608)]