20823648470

素因数分解:

$2^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{149}}^1\times {\mathrm{389}}^1\times {\mathrm{971}}^1$

素因数の和:1553

約数の個数: 64

約数和(自身を含む): 38893608000

約数和(自身を除く): 18069959530

約数列:

[1, 2, 5, 10, 37, 74, 149, 185, 298, 370, 389, 745, 778, 971, 1490, 1942, 1945, 3890, 4855, 5513, 9710, 11026, 14393, 27565, 28786, 35927, 55130, 57961, 71854, 71965, 115922, 143930, 144679, 179635, 289358, 289805, 359270, 377719, 579610, 723395, 755438, 1446790, 1888595, 2144557, 3777190, 4289114, 5353123, 10706246, 10722785, 13975603, 21445570, 26765615, 27951206, 53531230, 56280131, 69878015, 112560262, 139756030, 281400655, 562801310, 2082364847, 4164729694, 10411824235, 20823648470]

約数ペア:

[(1, 20823648470), (2, 10411824235), (5, 4164729694), (10, 2082364847), (37, 562801310), (74, 281400655), (149, 139756030), (185, 112560262), (298, 69878015), (370, 56280131), (389, 53531230), (745, 27951206), (778, 26765615), (971, 21445570), (1490, 13975603), (1942, 10722785), (1945, 10706246), (3890, 5353123), (4855, 4289114), (5513, 3777190), (9710, 2144557), (11026, 1888595), (14393, 1446790), (27565, 755438), (28786, 723395), (35927, 579610), (55130, 377719), (57961, 359270), (71854, 289805), (71965, 289358), (115922, 179635), (143930, 144679)]