17883980

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{107}}^1\times {\mathrm{137}}^1$

素因数の和:314

約数の個数: 48

約数和(自身を含む): 38810016

約数和(自身を除く): 20926036

約数列:

[1, 2, 4, 5, 10, 20, 61, 107, 122, 137, 214, 244, 274, 305, 428, 535, 548, 610, 685, 1070, 1220, 1370, 2140, 2740, 6527, 8357, 13054, 14659, 16714, 26108, 29318, 32635, 33428, 41785, 58636, 65270, 73295, 83570, 130540, 146590, 167140, 293180, 894199, 1788398, 3576796, 4470995, 8941990, 17883980]

約数ペア:

[(1, 17883980), (2, 8941990), (4, 4470995), (5, 3576796), (10, 1788398), (20, 894199), (61, 293180), (107, 167140), (122, 146590), (137, 130540), (214, 83570), (244, 73295), (274, 65270), (305, 58636), (428, 41785), (535, 33428), (548, 32635), (610, 29318), (685, 26108), (1070, 16714), (1220, 14659), (1370, 13054), (2140, 8357), (2740, 6527)]