20805917470

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{149}}^1\times {\mathrm{37039}}^1$

素因数の和:37237

約数の個数: 64

約数和(自身を含む): 42003360000

約数和(自身を除く): 21197442530

約数列:

[1, 2, 5, 10, 13, 26, 29, 58, 65, 130, 145, 149, 290, 298, 377, 745, 754, 1490, 1885, 1937, 3770, 3874, 4321, 8642, 9685, 19370, 21605, 37039, 43210, 56173, 74078, 112346, 185195, 280865, 370390, 481507, 561730, 963014, 1074131, 2148262, 2407535, 4815070, 5370655, 5518811, 10741310, 11037622, 13963703, 27594055, 27927406, 55188110, 69818515, 71744543, 139637030, 143489086, 160045519, 320091038, 358722715, 717445430, 800227595, 1600455190, 2080591747, 4161183494, 10402958735, 20805917470]

約数ペア:

[(1, 20805917470), (2, 10402958735), (5, 4161183494), (10, 2080591747), (13, 1600455190), (26, 800227595), (29, 717445430), (58, 358722715), (65, 320091038), (130, 160045519), (145, 143489086), (149, 139637030), (290, 71744543), (298, 69818515), (377, 55188110), (745, 27927406), (754, 27594055), (1490, 13963703), (1885, 11037622), (1937, 10741310), (3770, 5518811), (3874, 5370655), (4321, 4815070), (8642, 2407535), (9685, 2148262), (19370, 1074131), (21605, 963014), (37039, 561730), (43210, 481507), (56173, 370390), (74078, 280865), (112346, 185195)]