85680280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{9871}}^1$

素因数の和:9920

約数の個数: 64

約数和(自身を含む): 227450880

約数和(自身を除く): 141770600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 56, 62, 70, 124, 140, 155, 217, 248, 280, 310, 434, 620, 868, 1085, 1240, 1736, 2170, 4340, 8680, 9871, 19742, 39484, 49355, 69097, 78968, 98710, 138194, 197420, 276388, 306001, 345485, 394840, 552776, 612002, 690970, 1224004, 1381940, 1530005, 2142007, 2448008, 2763880, 3060010, 4284014, 6120020, 8568028, 10710035, 12240040, 17136056, 21420070, 42840140, 85680280]

約数ペア:

[(1, 85680280), (2, 42840140), (4, 21420070), (5, 17136056), (7, 12240040), (8, 10710035), (10, 8568028), (14, 6120020), (20, 4284014), (28, 3060010), (31, 2763880), (35, 2448008), (40, 2142007), (56, 1530005), (62, 1381940), (70, 1224004), (124, 690970), (140, 612002), (155, 552776), (217, 394840), (248, 345485), (280, 306001), (310, 276388), (434, 197420), (620, 138194), (868, 98710), (1085, 78968), (1240, 69097), (1736, 49355), (2170, 39484), (4340, 19742), (8680, 9871)]