28618940

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1$

素因数の和:124

約数の個数: 144

約数和(自身を含む): 77565600

約数和(自身を除く): 48946660

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 29, 35, 38, 49, 53, 58, 70, 76, 95, 98, 106, 116, 133, 140, 145, 190, 196, 203, 212, 245, 265, 266, 290, 371, 380, 406, 490, 530, 532, 551, 580, 665, 742, 812, 931, 980, 1007, 1015, 1060, 1102, 1330, 1421, 1484, 1537, 1855, 1862, 2014, 2030, 2204, 2597, 2660, 2755, 2842, 3074, 3710, 3724, 3857, 4028, 4060, 4655, 5035, 5194, 5510, 5684, 6148, 7049, 7105, 7420, 7685, 7714, 9310, 10070, 10388, 10759, 11020, 12985, 14098, 14210, 15370, 15428, 18620, 19285, 20140, 21518, 25970, 26999, 28196, 28420, 29203, 30740, 35245, 38570, 43036, 49343, 51940, 53795, 53998, 58406, 70490, 75313, 77140, 98686, 107590, 107996, 116812, 134995, 140980, 146015, 150626, 197372, 204421, 215180, 246715, 269990, 292030, 301252, 376565, 408842, 493430, 539980, 584060, 753130, 817684, 986860, 1022105, 1430947, 1506260, 2044210, 2861894, 4088420, 5723788, 7154735, 14309470, 28618940]

約数ペア:

[(1, 28618940), (2, 14309470), (4, 7154735), (5, 5723788), (7, 4088420), (10, 2861894), (14, 2044210), (19, 1506260), (20, 1430947), (28, 1022105), (29, 986860), (35, 817684), (38, 753130), (49, 584060), (53, 539980), (58, 493430), (70, 408842), (76, 376565), (95, 301252), (98, 292030), (106, 269990), (116, 246715), (133, 215180), (140, 204421), (145, 197372), (190, 150626), (196, 146015), (203, 140980), (212, 134995), (245, 116812), (265, 107996), (266, 107590), (290, 98686), (371, 77140), (380, 75313), (406, 70490), (490, 58406), (530, 53998), (532, 53795), (551, 51940), (580, 49343), (665, 43036), (742, 38570), (812, 35245), (931, 30740), (980, 29203), (1007, 28420), (1015, 28196), (1060, 26999), (1102, 25970), (1330, 21518), (1421, 20140), (1484, 19285), (1537, 18620), (1855, 15428), (1862, 15370), (2014, 14210), (2030, 14098), (2204, 12985), (2597, 11020), (2660, 10759), (2755, 10388), (2842, 10070), (3074, 9310), (3710, 7714), (3724, 7685), (3857, 7420), (4028, 7105), (4060, 7049), (4655, 6148), (5035, 5684), (5194, 5510)]