71379980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{16447}}^1$

素因数の和:16494

約数の個数: 48

約数和(自身を含む): 176848896

約数和(自身を除く): 105468916

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 70, 124, 140, 155, 217, 310, 434, 620, 868, 1085, 2170, 4340, 16447, 32894, 65788, 82235, 115129, 164470, 230258, 328940, 460516, 509857, 575645, 1019714, 1151290, 2039428, 2302580, 2549285, 3568999, 5098570, 7137998, 10197140, 14275996, 17844995, 35689990, 71379980]

約数ペア:

[(1, 71379980), (2, 35689990), (4, 17844995), (5, 14275996), (7, 10197140), (10, 7137998), (14, 5098570), (20, 3568999), (28, 2549285), (31, 2302580), (35, 2039428), (62, 1151290), (70, 1019714), (124, 575645), (140, 509857), (155, 460516), (217, 328940), (310, 230258), (434, 164470), (620, 115129), (868, 82235), (1085, 65788), (2170, 32894), (4340, 16447)]