20739810

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{107}}^1$

素因数の和:208

約数の個数: 128

約数和(自身を含む): 62705664

約数和(自身を除く): 41965854

約数列:

[1, 2, 3, 5, 6, 7, 10, 13, 14, 15, 21, 26, 30, 35, 39, 42, 65, 70, 71, 78, 91, 105, 107, 130, 142, 182, 195, 210, 213, 214, 273, 321, 355, 390, 426, 455, 497, 535, 546, 642, 710, 749, 910, 923, 994, 1065, 1070, 1365, 1391, 1491, 1498, 1605, 1846, 2130, 2247, 2485, 2730, 2769, 2782, 2982, 3210, 3745, 4173, 4494, 4615, 4970, 5538, 6461, 6955, 7455, 7490, 7597, 8346, 9230, 9737, 11235, 12922, 13845, 13910, 14910, 15194, 19383, 19474, 20865, 22470, 22791, 27690, 29211, 32305, 37985, 38766, 41730, 45582, 48685, 53179, 58422, 64610, 75970, 96915, 97370, 98761, 106358, 113955, 146055, 159537, 193830, 197522, 227910, 265895, 292110, 296283, 319074, 493805, 531790, 592566, 691327, 797685, 987610, 1382654, 1481415, 1595370, 2073981, 2962830, 3456635, 4147962, 6913270, 10369905, 20739810]

約数ペア:

[(1, 20739810), (2, 10369905), (3, 6913270), (5, 4147962), (6, 3456635), (7, 2962830), (10, 2073981), (13, 1595370), (14, 1481415), (15, 1382654), (21, 987610), (26, 797685), (30, 691327), (35, 592566), (39, 531790), (42, 493805), (65, 319074), (70, 296283), (71, 292110), (78, 265895), (91, 227910), (105, 197522), (107, 193830), (130, 159537), (142, 146055), (182, 113955), (195, 106358), (210, 98761), (213, 97370), (214, 96915), (273, 75970), (321, 64610), (355, 58422), (390, 53179), (426, 48685), (455, 45582), (497, 41730), (535, 38766), (546, 37985), (642, 32305), (710, 29211), (749, 27690), (910, 22791), (923, 22470), (994, 20865), (1065, 19474), (1070, 19383), (1365, 15194), (1391, 14910), (1491, 13910), (1498, 13845), (1605, 12922), (1846, 11235), (2130, 9737), (2247, 9230), (2485, 8346), (2730, 7597), (2769, 7490), (2782, 7455), (2982, 6955), (3210, 6461), (3745, 5538), (4173, 4970), (4494, 4615)]