20005097780

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^2\times {\mathrm{491}}^1\times {\mathrm{3851}}^1$

素因数の和:4397

約数の個数: 72

約数和(自身を含む): 44017543584

約数和(自身を除く): 24012445804

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 460, 491, 529, 982, 1058, 1964, 2116, 2455, 2645, 3851, 4910, 5290, 7702, 9820, 10580, 11293, 15404, 19255, 22586, 38510, 45172, 56465, 77020, 88573, 112930, 177146, 225860, 259739, 354292, 442865, 519478, 885730, 1038956, 1298695, 1771460, 1890841, 2037179, 2597390, 3781682, 4074358, 5194780, 7563364, 8148716, 9454205, 10185895, 18908410, 20371790, 37816820, 40743580, 43489343, 86978686, 173957372, 217446715, 434893430, 869786860, 1000254889, 2000509778, 4001019556, 5001274445, 10002548890, 20005097780]

約数ペア:

[(1, 20005097780), (2, 10002548890), (4, 5001274445), (5, 4001019556), (10, 2000509778), (20, 1000254889), (23, 869786860), (46, 434893430), (92, 217446715), (115, 173957372), (230, 86978686), (460, 43489343), (491, 40743580), (529, 37816820), (982, 20371790), (1058, 18908410), (1964, 10185895), (2116, 9454205), (2455, 8148716), (2645, 7563364), (3851, 5194780), (4910, 4074358), (5290, 3781682), (7702, 2597390), (9820, 2037179), (10580, 1890841), (11293, 1771460), (15404, 1298695), (19255, 1038956), (22586, 885730), (38510, 519478), (45172, 442865), (56465, 354292), (77020, 259739), (88573, 225860), (112930, 177146)]