19460740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^2\times {\mathrm{89}}^1$

素因数の和:169

約数の個数: 72

約数和(自身を含む): 46093320

約数和(自身を除く): 26632580

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 29, 52, 58, 65, 89, 116, 130, 145, 178, 260, 290, 356, 377, 445, 580, 754, 841, 890, 1157, 1508, 1682, 1780, 1885, 2314, 2581, 3364, 3770, 4205, 4628, 5162, 5785, 7540, 8410, 10324, 10933, 11570, 12905, 16820, 21866, 23140, 25810, 33553, 43732, 51620, 54665, 67106, 74849, 109330, 134212, 149698, 167765, 218660, 299396, 335530, 374245, 671060, 748490, 973037, 1496980, 1946074, 3892148, 4865185, 9730370, 19460740]

約数ペア:

[(1, 19460740), (2, 9730370), (4, 4865185), (5, 3892148), (10, 1946074), (13, 1496980), (20, 973037), (26, 748490), (29, 671060), (52, 374245), (58, 335530), (65, 299396), (89, 218660), (116, 167765), (130, 149698), (145, 134212), (178, 109330), (260, 74849), (290, 67106), (356, 54665), (377, 51620), (445, 43732), (580, 33553), (754, 25810), (841, 23140), (890, 21866), (1157, 16820), (1508, 12905), (1682, 11570), (1780, 10933), (1885, 10324), (2314, 8410), (2581, 7540), (3364, 5785), (3770, 5162), (4205, 4628)]