21047970

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{83}}^1\times {\mathrm{107}}^1$

素因数の和:279

約数の個数: 64

約数和(自身を含む): 52254720

約数和(自身を除く): 31206750

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 79, 83, 107, 158, 166, 214, 237, 249, 321, 395, 415, 474, 498, 535, 642, 790, 830, 1070, 1185, 1245, 1605, 2370, 2490, 3210, 6557, 8453, 8881, 13114, 16906, 17762, 19671, 25359, 26643, 32785, 39342, 42265, 44405, 50718, 53286, 65570, 84530, 88810, 98355, 126795, 133215, 196710, 253590, 266430, 701599, 1403198, 2104797, 3507995, 4209594, 7015990, 10523985, 21047970]

約数ペア:

[(1, 21047970), (2, 10523985), (3, 7015990), (5, 4209594), (6, 3507995), (10, 2104797), (15, 1403198), (30, 701599), (79, 266430), (83, 253590), (107, 196710), (158, 133215), (166, 126795), (214, 98355), (237, 88810), (249, 84530), (321, 65570), (395, 53286), (415, 50718), (474, 44405), (498, 42265), (535, 39342), (642, 32785), (790, 26643), (830, 25359), (1070, 19671), (1185, 17762), (1245, 16906), (1605, 13114), (2370, 8881), (2490, 8453), (3210, 6557)]