78899990

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{113}}^1\times {\mathrm{131}}^1$

素因数の和:305

約数の個数: 64

約数和(自身を含む): 159268032

約数和(自身を除く): 80368042

約数列:

[1, 2, 5, 10, 13, 26, 41, 65, 82, 113, 130, 131, 205, 226, 262, 410, 533, 565, 655, 1066, 1130, 1310, 1469, 1703, 2665, 2938, 3406, 4633, 5330, 5371, 7345, 8515, 9266, 10742, 14690, 14803, 17030, 23165, 26855, 29606, 46330, 53710, 60229, 69823, 74015, 120458, 139646, 148030, 192439, 301145, 349115, 384878, 602290, 606923, 698230, 962195, 1213846, 1924390, 3034615, 6069230, 7889999, 15779998, 39449995, 78899990]

約数ペア:

[(1, 78899990), (2, 39449995), (5, 15779998), (10, 7889999), (13, 6069230), (26, 3034615), (41, 1924390), (65, 1213846), (82, 962195), (113, 698230), (130, 606923), (131, 602290), (205, 384878), (226, 349115), (262, 301145), (410, 192439), (533, 148030), (565, 139646), (655, 120458), (1066, 74015), (1130, 69823), (1310, 60229), (1469, 53710), (1703, 46330), (2665, 29606), (2938, 26855), (3406, 23165), (4633, 17030), (5330, 14803), (5371, 14690), (7345, 10742), (8515, 9266)]