19919760

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{167}}^1$

素因数の和:261

約数の個数: 160

約数和(自身を含む): 71995392

約数和(自身を除く): 52075632

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 71, 80, 84, 105, 112, 120, 140, 142, 167, 168, 210, 213, 240, 280, 284, 334, 336, 355, 420, 426, 497, 501, 560, 568, 668, 710, 835, 840, 852, 994, 1002, 1065, 1136, 1169, 1336, 1420, 1491, 1670, 1680, 1704, 1988, 2004, 2130, 2338, 2485, 2505, 2672, 2840, 2982, 3340, 3408, 3507, 3976, 4008, 4260, 4676, 4970, 5010, 5680, 5845, 5964, 6680, 7014, 7455, 7952, 8016, 8520, 9352, 9940, 10020, 11690, 11857, 11928, 13360, 14028, 14910, 17040, 17535, 18704, 19880, 20040, 23380, 23714, 23856, 28056, 29820, 35070, 35571, 39760, 40080, 46760, 47428, 56112, 59285, 59640, 70140, 71142, 82999, 93520, 94856, 118570, 119280, 140280, 142284, 165998, 177855, 189712, 237140, 248997, 280560, 284568, 331996, 355710, 414995, 474280, 497994, 569136, 663992, 711420, 829990, 948560, 995988, 1244985, 1327984, 1422840, 1659980, 1991976, 2489970, 2845680, 3319960, 3983952, 4979940, 6639920, 9959880, 19919760]

約数ペア:

[(1, 19919760), (2, 9959880), (3, 6639920), (4, 4979940), (5, 3983952), (6, 3319960), (7, 2845680), (8, 2489970), (10, 1991976), (12, 1659980), (14, 1422840), (15, 1327984), (16, 1244985), (20, 995988), (21, 948560), (24, 829990), (28, 711420), (30, 663992), (35, 569136), (40, 497994), (42, 474280), (48, 414995), (56, 355710), (60, 331996), (70, 284568), (71, 280560), (80, 248997), (84, 237140), (105, 189712), (112, 177855), (120, 165998), (140, 142284), (142, 140280), (167, 119280), (168, 118570), (210, 94856), (213, 93520), (240, 82999), (280, 71142), (284, 70140), (334, 59640), (336, 59285), (355, 56112), (420, 47428), (426, 46760), (497, 40080), (501, 39760), (560, 35571), (568, 35070), (668, 29820), (710, 28056), (835, 23856), (840, 23714), (852, 23380), (994, 20040), (1002, 19880), (1065, 18704), (1136, 17535), (1169, 17040), (1336, 14910), (1420, 14028), (1491, 13360), (1670, 11928), (1680, 11857), (1704, 11690), (1988, 10020), (2004, 9940), (2130, 9352), (2338, 8520), (2485, 8016), (2505, 7952), (2672, 7455), (2840, 7014), (2982, 6680), (3340, 5964), (3408, 5845), (3507, 5680), (3976, 5010), (4008, 4970), (4260, 4676)]