21316829980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{227}}^1\times {\mathrm{6679}}^1$

素因数の和:6971

約数の個数: 96

約数和(自身を含む): 48615436800

約数和(自身を除く): 27298606820

約数列:

[1, 2, 4, 5, 10, 19, 20, 37, 38, 74, 76, 95, 148, 185, 190, 227, 370, 380, 454, 703, 740, 908, 1135, 1406, 2270, 2812, 3515, 4313, 4540, 6679, 7030, 8399, 8626, 13358, 14060, 16798, 17252, 21565, 26716, 33395, 33596, 41995, 43130, 66790, 83990, 86260, 126901, 133580, 159581, 167980, 247123, 253802, 319162, 494246, 507604, 634505, 638324, 797905, 988492, 1235615, 1269010, 1516133, 1595810, 2471230, 2538020, 3032266, 3191620, 4695337, 4942460, 6064532, 7580665, 9390674, 15161330, 18781348, 23476685, 28806527, 30322660, 46953370, 56096921, 57613054, 93906740, 112193842, 115226108, 144032635, 224387684, 280484605, 288065270, 560969210, 576130540, 1065841499, 1121938420, 2131682998, 4263365996, 5329207495, 10658414990, 21316829980]

約数ペア:

[(1, 21316829980), (2, 10658414990), (4, 5329207495), (5, 4263365996), (10, 2131682998), (19, 1121938420), (20, 1065841499), (37, 576130540), (38, 560969210), (74, 288065270), (76, 280484605), (95, 224387684), (148, 144032635), (185, 115226108), (190, 112193842), (227, 93906740), (370, 57613054), (380, 56096921), (454, 46953370), (703, 30322660), (740, 28806527), (908, 23476685), (1135, 18781348), (1406, 15161330), (2270, 9390674), (2812, 7580665), (3515, 6064532), (4313, 4942460), (4540, 4695337), (6679, 3191620), (7030, 3032266), (8399, 2538020), (8626, 2471230), (13358, 1595810), (14060, 1516133), (16798, 1269010), (17252, 1235615), (21565, 988492), (26716, 797905), (33395, 638324), (33596, 634505), (41995, 507604), (43130, 494246), (66790, 319162), (83990, 253802), (86260, 247123), (126901, 167980), (133580, 159581)]