20990070

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{17}}^2\times {\mathrm{269}}^1$

素因数の和:319

約数の個数: 96

約数和(自身を含む): 59680800

約数和(自身を除く): 38690730

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 17, 18, 27, 30, 34, 45, 51, 54, 85, 90, 102, 135, 153, 170, 255, 269, 270, 289, 306, 459, 510, 538, 578, 765, 807, 867, 918, 1345, 1445, 1530, 1614, 1734, 2295, 2421, 2601, 2690, 2890, 4035, 4335, 4573, 4590, 4842, 5202, 7263, 7803, 8070, 8670, 9146, 12105, 13005, 13719, 14526, 15606, 22865, 24210, 26010, 27438, 36315, 39015, 41157, 45730, 68595, 72630, 77741, 78030, 82314, 123471, 137190, 155482, 205785, 233223, 246942, 388705, 411570, 466446, 617355, 699669, 777410, 1166115, 1234710, 1399338, 2099007, 2332230, 3498345, 4198014, 6996690, 10495035, 20990070]

約数ペア:

[(1, 20990070), (2, 10495035), (3, 6996690), (5, 4198014), (6, 3498345), (9, 2332230), (10, 2099007), (15, 1399338), (17, 1234710), (18, 1166115), (27, 777410), (30, 699669), (34, 617355), (45, 466446), (51, 411570), (54, 388705), (85, 246942), (90, 233223), (102, 205785), (135, 155482), (153, 137190), (170, 123471), (255, 82314), (269, 78030), (270, 77741), (289, 72630), (306, 68595), (459, 45730), (510, 41157), (538, 39015), (578, 36315), (765, 27438), (807, 26010), (867, 24210), (918, 22865), (1345, 15606), (1445, 14526), (1530, 13719), (1614, 13005), (1734, 12105), (2295, 9146), (2421, 8670), (2601, 8070), (2690, 7803), (2890, 7263), (4035, 5202), (4335, 4842), (4573, 4590)]