78546440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{163}}^1\times {\mathrm{1721}}^1$

素因数の和:1902

約数の個数: 64

約数和(自身を含む): 203333760

約数和(自身を除く): 124787320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 163, 280, 326, 652, 815, 1141, 1304, 1630, 1721, 2282, 3260, 3442, 4564, 5705, 6520, 6884, 8605, 9128, 11410, 12047, 13768, 17210, 22820, 24094, 34420, 45640, 48188, 60235, 68840, 96376, 120470, 240940, 280523, 481880, 561046, 1122092, 1402615, 1963661, 2244184, 2805230, 3927322, 5610460, 7854644, 9818305, 11220920, 15709288, 19636610, 39273220, 78546440]

約数ペア:

[(1, 78546440), (2, 39273220), (4, 19636610), (5, 15709288), (7, 11220920), (8, 9818305), (10, 7854644), (14, 5610460), (20, 3927322), (28, 2805230), (35, 2244184), (40, 1963661), (56, 1402615), (70, 1122092), (140, 561046), (163, 481880), (280, 280523), (326, 240940), (652, 120470), (815, 96376), (1141, 68840), (1304, 60235), (1630, 48188), (1721, 45640), (2282, 34420), (3260, 24094), (3442, 22820), (4564, 17210), (5705, 13768), (6520, 12047), (6884, 11410), (8605, 9128)]