30501940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{223}}^1\times {\mathrm{977}}^1$

素因数の和:1216

約数の個数: 48

約数和(自身を含む): 73608192

約数和(自身を除く): 43106252

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 223, 446, 892, 977, 1115, 1561, 1954, 2230, 3122, 3908, 4460, 4885, 6244, 6839, 7805, 9770, 13678, 15610, 19540, 27356, 31220, 34195, 68390, 136780, 217871, 435742, 871484, 1089355, 1525097, 2178710, 3050194, 4357420, 6100388, 7625485, 15250970, 30501940]

約数ペア:

[(1, 30501940), (2, 15250970), (4, 7625485), (5, 6100388), (7, 4357420), (10, 3050194), (14, 2178710), (20, 1525097), (28, 1089355), (35, 871484), (70, 435742), (140, 217871), (223, 136780), (446, 68390), (892, 34195), (977, 31220), (1115, 27356), (1561, 19540), (1954, 15610), (2230, 13678), (3122, 9770), (3908, 7805), (4460, 6839), (4885, 6244)]