81379830

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{277}}^1\times {\mathrm{1399}}^1$

素因数の和:1693

約数の個数: 64

約数和(自身を含む): 224179200

約数和(自身を除く): 142799370

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210, 277, 554, 831, 1385, 1399, 1662, 1939, 2770, 2798, 3878, 4155, 4197, 5817, 6995, 8310, 8394, 9695, 9793, 11634, 13990, 19390, 19586, 20985, 29085, 29379, 41970, 48965, 58170, 58758, 97930, 146895, 293790, 387523, 775046, 1162569, 1937615, 2325138, 2712661, 3875230, 5425322, 5812845, 8137983, 11625690, 13563305, 16275966, 27126610, 40689915, 81379830]

約数ペア:

[(1, 81379830), (2, 40689915), (3, 27126610), (5, 16275966), (6, 13563305), (7, 11625690), (10, 8137983), (14, 5812845), (15, 5425322), (21, 3875230), (30, 2712661), (35, 2325138), (42, 1937615), (70, 1162569), (105, 775046), (210, 387523), (277, 293790), (554, 146895), (831, 97930), (1385, 58758), (1399, 58170), (1662, 48965), (1939, 41970), (2770, 29379), (2798, 29085), (3878, 20985), (4155, 19586), (4197, 19390), (5817, 13990), (6995, 11634), (8310, 9793), (8394, 9695)]