42840357

素因数分解:

$3^1\times 7^3\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1$

素因数の和:151

約数の個数: 64

約数和(自身を含む): 73728000

約数和(自身を除く): 30887643

約数列:

[1, 3, 7, 17, 21, 31, 49, 51, 79, 93, 119, 147, 217, 237, 343, 357, 527, 553, 651, 833, 1029, 1343, 1519, 1581, 1659, 2449, 2499, 3689, 3871, 4029, 4557, 5831, 7347, 9401, 10633, 11067, 11613, 17143, 17493, 25823, 27097, 28203, 31899, 41633, 51429, 65807, 77469, 81291, 120001, 124899, 180761, 197421, 291431, 360003, 460649, 542283, 840007, 874293, 1381947, 2040017, 2520021, 6120051, 14280119, 42840357]

約数ペア:

[(1, 42840357), (3, 14280119), (7, 6120051), (17, 2520021), (21, 2040017), (31, 1381947), (49, 874293), (51, 840007), (79, 542283), (93, 460649), (119, 360003), (147, 291431), (217, 197421), (237, 180761), (343, 124899), (357, 120001), (527, 81291), (553, 77469), (651, 65807), (833, 51429), (1029, 41633), (1343, 31899), (1519, 28203), (1581, 27097), (1659, 25823), (2449, 17493), (2499, 17143), (3689, 11613), (3871, 11067), (4029, 10633), (4557, 9401), (5831, 7347)]