21979230

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{97}}^1$

素因数の和:210

約数の個数: 128

約数和(自身を含む): 66382848

約数和(自身を除く): 44403618

約数列:

[1, 2, 3, 5, 6, 7, 10, 13, 14, 15, 21, 26, 30, 35, 39, 42, 65, 70, 78, 83, 91, 97, 105, 130, 166, 182, 194, 195, 210, 249, 273, 291, 390, 415, 455, 485, 498, 546, 581, 582, 679, 830, 910, 970, 1079, 1162, 1245, 1261, 1358, 1365, 1455, 1743, 2037, 2158, 2490, 2522, 2730, 2905, 2910, 3237, 3395, 3486, 3783, 4074, 5395, 5810, 6305, 6474, 6790, 7553, 7566, 8051, 8715, 8827, 10185, 10790, 12610, 15106, 16102, 16185, 17430, 17654, 18915, 20370, 22659, 24153, 26481, 32370, 37765, 37830, 40255, 44135, 45318, 48306, 52962, 56357, 75530, 80510, 88270, 104663, 112714, 113295, 120765, 132405, 169071, 209326, 226590, 241530, 264810, 281785, 313989, 338142, 523315, 563570, 627978, 732641, 845355, 1046630, 1465282, 1569945, 1690710, 2197923, 3139890, 3663205, 4395846, 7326410, 10989615, 21979230]

約数ペア:

[(1, 21979230), (2, 10989615), (3, 7326410), (5, 4395846), (6, 3663205), (7, 3139890), (10, 2197923), (13, 1690710), (14, 1569945), (15, 1465282), (21, 1046630), (26, 845355), (30, 732641), (35, 627978), (39, 563570), (42, 523315), (65, 338142), (70, 313989), (78, 281785), (83, 264810), (91, 241530), (97, 226590), (105, 209326), (130, 169071), (166, 132405), (182, 120765), (194, 113295), (195, 112714), (210, 104663), (249, 88270), (273, 80510), (291, 75530), (390, 56357), (415, 52962), (455, 48306), (485, 45318), (498, 44135), (546, 40255), (581, 37830), (582, 37765), (679, 32370), (830, 26481), (910, 24153), (970, 22659), (1079, 20370), (1162, 18915), (1245, 17654), (1261, 17430), (1358, 16185), (1365, 16102), (1455, 15106), (1743, 12610), (2037, 10790), (2158, 10185), (2490, 8827), (2522, 8715), (2730, 8051), (2905, 7566), (2910, 7553), (3237, 6790), (3395, 6474), (3486, 6305), (3783, 5810), (4074, 5395)]