20671872

素因数分解:

$2^7\times 3^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{101}}^1$

素因数の和:172

約数の個数: 128

約数和(自身を含む): 61175520

約数和(自身を除く): 40503648

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 32, 39, 41, 48, 52, 64, 78, 82, 96, 101, 104, 123, 128, 156, 164, 192, 202, 208, 246, 303, 312, 328, 384, 404, 416, 492, 533, 606, 624, 656, 808, 832, 984, 1066, 1212, 1248, 1312, 1313, 1599, 1616, 1664, 1968, 2132, 2424, 2496, 2624, 2626, 3198, 3232, 3936, 3939, 4141, 4264, 4848, 4992, 5248, 5252, 6396, 6464, 7872, 7878, 8282, 8528, 9696, 10504, 12423, 12792, 12928, 15744, 15756, 16564, 17056, 19392, 21008, 24846, 25584, 31512, 33128, 34112, 38784, 42016, 49692, 51168, 53833, 63024, 66256, 68224, 84032, 99384, 102336, 107666, 126048, 132512, 161499, 168064, 198768, 204672, 215332, 252096, 265024, 322998, 397536, 430664, 504192, 530048, 645996, 795072, 861328, 1291992, 1590144, 1722656, 2583984, 3445312, 5167968, 6890624, 10335936, 20671872]

約数ペア:

[(1, 20671872), (2, 10335936), (3, 6890624), (4, 5167968), (6, 3445312), (8, 2583984), (12, 1722656), (13, 1590144), (16, 1291992), (24, 861328), (26, 795072), (32, 645996), (39, 530048), (41, 504192), (48, 430664), (52, 397536), (64, 322998), (78, 265024), (82, 252096), (96, 215332), (101, 204672), (104, 198768), (123, 168064), (128, 161499), (156, 132512), (164, 126048), (192, 107666), (202, 102336), (208, 99384), (246, 84032), (303, 68224), (312, 66256), (328, 63024), (384, 53833), (404, 51168), (416, 49692), (492, 42016), (533, 38784), (606, 34112), (624, 33128), (656, 31512), (808, 25584), (832, 24846), (984, 21008), (1066, 19392), (1212, 17056), (1248, 16564), (1312, 15756), (1313, 15744), (1599, 12928), (1616, 12792), (1664, 12423), (1968, 10504), (2132, 9696), (2424, 8528), (2496, 8282), (2624, 7878), (2626, 7872), (3198, 6464), (3232, 6396), (3936, 5252), (3939, 5248), (4141, 4992), (4264, 4848)]