78486980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{2111}}^1$

素因数の和:2157

約数の個数: 72

約数和(自身を含む): 194793984

約数和(自身を除く): 116307004

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 110, 130, 143, 169, 220, 260, 286, 338, 572, 676, 715, 845, 1430, 1690, 1859, 2111, 2860, 3380, 3718, 4222, 7436, 8444, 9295, 10555, 18590, 21110, 23221, 27443, 37180, 42220, 46442, 54886, 92884, 109772, 116105, 137215, 232210, 274430, 301873, 356759, 464420, 548860, 603746, 713518, 1207492, 1427036, 1509365, 1783795, 3018730, 3567590, 3924349, 6037460, 7135180, 7848698, 15697396, 19621745, 39243490, 78486980]

約数ペア:

[(1, 78486980), (2, 39243490), (4, 19621745), (5, 15697396), (10, 7848698), (11, 7135180), (13, 6037460), (20, 3924349), (22, 3567590), (26, 3018730), (44, 1783795), (52, 1509365), (55, 1427036), (65, 1207492), (110, 713518), (130, 603746), (143, 548860), (169, 464420), (220, 356759), (260, 301873), (286, 274430), (338, 232210), (572, 137215), (676, 116105), (715, 109772), (845, 92884), (1430, 54886), (1690, 46442), (1859, 42220), (2111, 37180), (2860, 27443), (3380, 23221), (3718, 21110), (4222, 18590), (7436, 10555), (8444, 9295)]