21511490

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{307}}^1$

素因数の和:352

約数の個数: 96

約数和(自身を含む): 53089344

約数和(自身を除く): 31577854

約数列:

[1, 2, 5, 7, 10, 11, 13, 14, 22, 26, 35, 49, 55, 65, 70, 77, 91, 98, 110, 130, 143, 154, 182, 245, 286, 307, 385, 455, 490, 539, 614, 637, 715, 770, 910, 1001, 1078, 1274, 1430, 1535, 2002, 2149, 2695, 3070, 3185, 3377, 3991, 4298, 5005, 5390, 6370, 6754, 7007, 7982, 10010, 10745, 14014, 15043, 16885, 19955, 21490, 23639, 27937, 30086, 33770, 35035, 39910, 43901, 47278, 55874, 70070, 75215, 87802, 118195, 139685, 150430, 165473, 195559, 219505, 236390, 279370, 307307, 330946, 391118, 439010, 614614, 827365, 977795, 1536535, 1654730, 1955590, 2151149, 3073070, 4302298, 10755745, 21511490]

約数ペア:

[(1, 21511490), (2, 10755745), (5, 4302298), (7, 3073070), (10, 2151149), (11, 1955590), (13, 1654730), (14, 1536535), (22, 977795), (26, 827365), (35, 614614), (49, 439010), (55, 391118), (65, 330946), (70, 307307), (77, 279370), (91, 236390), (98, 219505), (110, 195559), (130, 165473), (143, 150430), (154, 139685), (182, 118195), (245, 87802), (286, 75215), (307, 70070), (385, 55874), (455, 47278), (490, 43901), (539, 39910), (614, 35035), (637, 33770), (715, 30086), (770, 27937), (910, 23639), (1001, 21490), (1078, 19955), (1274, 16885), (1430, 15043), (1535, 14014), (2002, 10745), (2149, 10010), (2695, 7982), (3070, 7007), (3185, 6754), (3377, 6370), (3991, 5390), (4298, 5005)]