19497640

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{541}}^1$

素因数の和:622

約数の個数: 64

約数和(自身を含む): 47414160

約数和(自身を除く): 27916520

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 53, 68, 85, 106, 136, 170, 212, 265, 340, 424, 530, 541, 680, 901, 1060, 1082, 1802, 2120, 2164, 2705, 3604, 4328, 4505, 5410, 7208, 9010, 9197, 10820, 18020, 18394, 21640, 28673, 36040, 36788, 45985, 57346, 73576, 91970, 114692, 143365, 183940, 229384, 286730, 367880, 487441, 573460, 974882, 1146920, 1949764, 2437205, 3899528, 4874410, 9748820, 19497640]

約数ペア:

[(1, 19497640), (2, 9748820), (4, 4874410), (5, 3899528), (8, 2437205), (10, 1949764), (17, 1146920), (20, 974882), (34, 573460), (40, 487441), (53, 367880), (68, 286730), (85, 229384), (106, 183940), (136, 143365), (170, 114692), (212, 91970), (265, 73576), (340, 57346), (424, 45985), (530, 36788), (541, 36040), (680, 28673), (901, 21640), (1060, 18394), (1082, 18020), (1802, 10820), (2120, 9197), (2164, 9010), (2705, 7208), (3604, 5410), (4328, 4505)]