20028470

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^2$

素因数の和:118

約数の個数: 96

約数和(自身を含む): 48625920

約数和(自身を除く): 28597450

約数列:

[1, 2, 5, 7, 10, 11, 14, 19, 22, 35, 37, 38, 55, 70, 74, 77, 95, 110, 133, 154, 185, 190, 209, 259, 266, 370, 385, 407, 418, 518, 665, 703, 770, 814, 1045, 1295, 1330, 1369, 1406, 1463, 2035, 2090, 2590, 2738, 2849, 2926, 3515, 4070, 4921, 5698, 6845, 7030, 7315, 7733, 9583, 9842, 13690, 14245, 14630, 15059, 15466, 19166, 24605, 26011, 28490, 30118, 38665, 47915, 49210, 52022, 54131, 75295, 77330, 95830, 105413, 108262, 130055, 150590, 182077, 210826, 260110, 270655, 286121, 364154, 527065, 541310, 572242, 910385, 1054130, 1430605, 1820770, 2002847, 2861210, 4005694, 10014235, 20028470]

約数ペア:

[(1, 20028470), (2, 10014235), (5, 4005694), (7, 2861210), (10, 2002847), (11, 1820770), (14, 1430605), (19, 1054130), (22, 910385), (35, 572242), (37, 541310), (38, 527065), (55, 364154), (70, 286121), (74, 270655), (77, 260110), (95, 210826), (110, 182077), (133, 150590), (154, 130055), (185, 108262), (190, 105413), (209, 95830), (259, 77330), (266, 75295), (370, 54131), (385, 52022), (407, 49210), (418, 47915), (518, 38665), (665, 30118), (703, 28490), (770, 26011), (814, 24605), (1045, 19166), (1295, 15466), (1330, 15059), (1369, 14630), (1406, 14245), (1463, 13690), (2035, 9842), (2090, 9583), (2590, 7733), (2738, 7315), (2849, 7030), (2926, 6845), (3515, 5698), (4070, 4921)]