20211001720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{40529}}^1$

素因数の和:40697

約数の個数: 128

約数和(自身を含む): 56378851200

約数和(自身を除く): 36167849480

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 137, 140, 182, 260, 274, 280, 364, 455, 520, 548, 685, 728, 910, 959, 1096, 1370, 1781, 1820, 1918, 2740, 3562, 3640, 3836, 4795, 5480, 7124, 7672, 8905, 9590, 12467, 14248, 17810, 19180, 24934, 35620, 38360, 40529, 49868, 62335, 71240, 81058, 99736, 124670, 162116, 202645, 249340, 283703, 324232, 405290, 498680, 526877, 567406, 810580, 1053754, 1134812, 1418515, 1621160, 2107508, 2269624, 2634385, 2837030, 3688139, 4215016, 5268770, 5552473, 5674060, 7376278, 10537540, 11104946, 11348120, 14752556, 18440695, 21075080, 22209892, 27762365, 29505112, 36881390, 38867311, 44419784, 55524730, 72182149, 73762780, 77734622, 111049460, 144364298, 147525560, 155469244, 194336555, 222098920, 288728596, 310938488, 360910745, 388673110, 505275043, 577457192, 721821490, 777346220, 1010550086, 1443642980, 1554692440, 2021100172, 2526375215, 2887285960, 4042200344, 5052750430, 10105500860, 20211001720]

約数ペア:

[(1, 20211001720), (2, 10105500860), (4, 5052750430), (5, 4042200344), (7, 2887285960), (8, 2526375215), (10, 2021100172), (13, 1554692440), (14, 1443642980), (20, 1010550086), (26, 777346220), (28, 721821490), (35, 577457192), (40, 505275043), (52, 388673110), (56, 360910745), (65, 310938488), (70, 288728596), (91, 222098920), (104, 194336555), (130, 155469244), (137, 147525560), (140, 144364298), (182, 111049460), (260, 77734622), (274, 73762780), (280, 72182149), (364, 55524730), (455, 44419784), (520, 38867311), (548, 36881390), (685, 29505112), (728, 27762365), (910, 22209892), (959, 21075080), (1096, 18440695), (1370, 14752556), (1781, 11348120), (1820, 11104946), (1918, 10537540), (2740, 7376278), (3562, 5674060), (3640, 5552473), (3836, 5268770), (4795, 4215016), (5480, 3688139), (7124, 2837030), (7672, 2634385), (8905, 2269624), (9590, 2107508), (12467, 1621160), (14248, 1418515), (17810, 1134812), (19180, 1053754), (24934, 810580), (35620, 567406), (38360, 526877), (40529, 498680), (49868, 405290), (62335, 324232), (71240, 283703), (81058, 249340), (99736, 202645), (124670, 162116)]