28681870

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{199}}^1$

素因数の和:313

約数の個数: 64

約数和(自身を含む): 62208000

約数和(自身を除く): 33526130

約数列:

[1, 2, 5, 7, 10, 14, 29, 35, 58, 70, 71, 142, 145, 199, 203, 290, 355, 398, 406, 497, 710, 994, 995, 1015, 1393, 1990, 2030, 2059, 2485, 2786, 4118, 4970, 5771, 6965, 10295, 11542, 13930, 14129, 14413, 20590, 28258, 28826, 28855, 40397, 57710, 70645, 72065, 80794, 98903, 141290, 144130, 197806, 201985, 403970, 409741, 494515, 819482, 989030, 2048705, 2868187, 4097410, 5736374, 14340935, 28681870]

約数ペア:

[(1, 28681870), (2, 14340935), (5, 5736374), (7, 4097410), (10, 2868187), (14, 2048705), (29, 989030), (35, 819482), (58, 494515), (70, 409741), (71, 403970), (142, 201985), (145, 197806), (199, 144130), (203, 141290), (290, 98903), (355, 80794), (398, 72065), (406, 70645), (497, 57710), (710, 40397), (994, 28855), (995, 28826), (1015, 28258), (1393, 20590), (1990, 14413), (2030, 14129), (2059, 13930), (2485, 11542), (2786, 10295), (4118, 6965), (4970, 5771)]