21478439640

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{1601}}^1\times {\mathrm{15971}}^1$

素因数の和:17593

約数の個数: 128

約数和(自身を含む): 73690974720

約数和(自身を除く): 52212535080

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 1601, 3202, 4803, 6404, 8005, 9606, 11207, 12808, 15971, 16010, 19212, 22414, 24015, 31942, 32020, 33621, 38424, 44828, 47913, 48030, 56035, 63884, 64040, 67242, 79855, 89656, 95826, 96060, 111797, 112070, 127768, 134484, 159710, 168105, 191652, 192120, 223594, 224140, 239565, 268968, 319420, 335391, 336210, 383304, 447188, 448280, 479130, 558985, 638840, 670782, 672420, 894376, 958260, 1117970, 1341564, 1344840, 1676955, 1916520, 2235940, 2683128, 3353910, 4471880, 6707820, 13415640, 25569571, 51139142, 76708713, 102278284, 127847855, 153417426, 178986997, 204556568, 255695710, 306834852, 357973994, 383543565, 511391420, 536960991, 613669704, 715947988, 767087130, 894934985, 1022782840, 1073921982, 1431895976, 1534174260, 1789869970, 2147843964, 2684804955, 3068348520, 3579739940, 4295687928, 5369609910, 7159479880, 10739219820, 21478439640]

約数ペア:

[(1, 21478439640), (2, 10739219820), (3, 7159479880), (4, 5369609910), (5, 4295687928), (6, 3579739940), (7, 3068348520), (8, 2684804955), (10, 2147843964), (12, 1789869970), (14, 1534174260), (15, 1431895976), (20, 1073921982), (21, 1022782840), (24, 894934985), (28, 767087130), (30, 715947988), (35, 613669704), (40, 536960991), (42, 511391420), (56, 383543565), (60, 357973994), (70, 306834852), (84, 255695710), (105, 204556568), (120, 178986997), (140, 153417426), (168, 127847855), (210, 102278284), (280, 76708713), (420, 51139142), (840, 25569571), (1601, 13415640), (3202, 6707820), (4803, 4471880), (6404, 3353910), (8005, 2683128), (9606, 2235940), (11207, 1916520), (12808, 1676955), (15971, 1344840), (16010, 1341564), (19212, 1117970), (22414, 958260), (24015, 894376), (31942, 672420), (32020, 670782), (33621, 638840), (38424, 558985), (44828, 479130), (47913, 448280), (48030, 447188), (56035, 383304), (63884, 336210), (64040, 335391), (67242, 319420), (79855, 268968), (89656, 239565), (95826, 224140), (96060, 223594), (111797, 192120), (112070, 191652), (127768, 168105), (134484, 159710)]