21545730

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{199}}^1\times {\mathrm{401}}^1$

素因数の和:616

約数の個数: 64

約数和(自身を含む): 57888000

約数和(自身を除く): 36342270

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 90, 135, 199, 270, 398, 401, 597, 802, 995, 1194, 1203, 1791, 1990, 2005, 2406, 2985, 3582, 3609, 4010, 5373, 5970, 6015, 7218, 8955, 10746, 10827, 12030, 17910, 18045, 21654, 26865, 36090, 53730, 54135, 79799, 108270, 159598, 239397, 398995, 478794, 718191, 797990, 1196985, 1436382, 2154573, 2393970, 3590955, 4309146, 7181910, 10772865, 21545730]

約数ペア:

[(1, 21545730), (2, 10772865), (3, 7181910), (5, 4309146), (6, 3590955), (9, 2393970), (10, 2154573), (15, 1436382), (18, 1196985), (27, 797990), (30, 718191), (45, 478794), (54, 398995), (90, 239397), (135, 159598), (199, 108270), (270, 79799), (398, 54135), (401, 53730), (597, 36090), (802, 26865), (995, 21654), (1194, 18045), (1203, 17910), (1791, 12030), (1990, 10827), (2005, 10746), (2406, 8955), (2985, 7218), (3582, 6015), (3609, 5970), (4010, 5373)]