20513010

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{137}}^1$

素因数の和:208

約数の個数: 128

約数和(自身を含む): 61046784

約数和(自身を除く): 40533774

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 23, 30, 31, 35, 42, 46, 62, 69, 70, 93, 105, 115, 137, 138, 155, 161, 186, 210, 217, 230, 274, 310, 322, 345, 411, 434, 465, 483, 651, 685, 690, 713, 805, 822, 930, 959, 966, 1085, 1302, 1370, 1426, 1610, 1918, 2055, 2139, 2170, 2415, 2877, 3151, 3255, 3565, 4110, 4247, 4278, 4795, 4830, 4991, 5754, 6302, 6510, 7130, 8494, 9453, 9590, 9982, 10695, 12741, 14385, 14973, 15755, 18906, 21235, 21390, 22057, 24955, 25482, 28770, 29729, 29946, 31510, 42470, 44114, 47265, 49910, 59458, 63705, 66171, 74865, 89187, 94530, 97681, 110285, 127410, 132342, 148645, 149730, 178374, 195362, 220570, 293043, 297290, 330855, 445935, 488405, 586086, 661710, 683767, 891870, 976810, 1367534, 1465215, 2051301, 2930430, 3418835, 4102602, 6837670, 10256505, 20513010]

約数ペア:

[(1, 20513010), (2, 10256505), (3, 6837670), (5, 4102602), (6, 3418835), (7, 2930430), (10, 2051301), (14, 1465215), (15, 1367534), (21, 976810), (23, 891870), (30, 683767), (31, 661710), (35, 586086), (42, 488405), (46, 445935), (62, 330855), (69, 297290), (70, 293043), (93, 220570), (105, 195362), (115, 178374), (137, 149730), (138, 148645), (155, 132342), (161, 127410), (186, 110285), (210, 97681), (217, 94530), (230, 89187), (274, 74865), (310, 66171), (322, 63705), (345, 59458), (411, 49910), (434, 47265), (465, 44114), (483, 42470), (651, 31510), (685, 29946), (690, 29729), (713, 28770), (805, 25482), (822, 24955), (930, 22057), (959, 21390), (966, 21235), (1085, 18906), (1302, 15755), (1370, 14973), (1426, 14385), (1610, 12741), (1918, 10695), (2055, 9982), (2139, 9590), (2170, 9453), (2415, 8494), (2877, 7130), (3151, 6510), (3255, 6302), (3565, 5754), (4110, 4991), (4247, 4830), (4278, 4795)]