20413190

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{409}}^1$

素因数の和:477

約数の個数: 64

約数和(自身を含む): 45342720

約数和(自身を除く): 24929530

約数列:

[1, 2, 5, 7, 10, 14, 23, 31, 35, 46, 62, 70, 115, 155, 161, 217, 230, 310, 322, 409, 434, 713, 805, 818, 1085, 1426, 1610, 2045, 2170, 2863, 3565, 4090, 4991, 5726, 7130, 9407, 9982, 12679, 14315, 18814, 24955, 25358, 28630, 47035, 49910, 63395, 65849, 88753, 94070, 126790, 131698, 177506, 291617, 329245, 443765, 583234, 658490, 887530, 1458085, 2041319, 2916170, 4082638, 10206595, 20413190]

約数ペア:

[(1, 20413190), (2, 10206595), (5, 4082638), (7, 2916170), (10, 2041319), (14, 1458085), (23, 887530), (31, 658490), (35, 583234), (46, 443765), (62, 329245), (70, 291617), (115, 177506), (155, 131698), (161, 126790), (217, 94070), (230, 88753), (310, 65849), (322, 63395), (409, 49910), (434, 47035), (713, 28630), (805, 25358), (818, 24955), (1085, 18814), (1426, 14315), (1610, 12679), (2045, 9982), (2170, 9407), (2863, 7130), (3565, 5726), (4090, 4991)]