28969420

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{887}}^1$

素因数の和:990

約数の個数: 48

約数和(自身を含む): 64447488

約数和(自身を除く): 35478068

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 71, 92, 115, 142, 230, 284, 355, 460, 710, 887, 1420, 1633, 1774, 3266, 3548, 4435, 6532, 8165, 8870, 16330, 17740, 20401, 32660, 40802, 62977, 81604, 102005, 125954, 204010, 251908, 314885, 408020, 629770, 1259540, 1448471, 2896942, 5793884, 7242355, 14484710, 28969420]

約数ペア:

[(1, 28969420), (2, 14484710), (4, 7242355), (5, 5793884), (10, 2896942), (20, 1448471), (23, 1259540), (46, 629770), (71, 408020), (92, 314885), (115, 251908), (142, 204010), (230, 125954), (284, 102005), (355, 81604), (460, 62977), (710, 40802), (887, 32660), (1420, 20401), (1633, 17740), (1774, 16330), (3266, 8870), (3548, 8165), (4435, 6532)]