21439450

素因数分解:

$2^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{103}}^1\times {\mathrm{181}}^1$

素因数の和:319

約数の個数: 48

約数和(自身を含む): 42247296

約数和(自身を除く): 20807846

約数列:

[1, 2, 5, 10, 23, 25, 46, 50, 103, 115, 181, 206, 230, 362, 515, 575, 905, 1030, 1150, 1810, 2369, 2575, 4163, 4525, 4738, 5150, 8326, 9050, 11845, 18643, 20815, 23690, 37286, 41630, 59225, 93215, 104075, 118450, 186430, 208150, 428789, 466075, 857578, 932150, 2143945, 4287890, 10719725, 21439450]

約数ペア:

[(1, 21439450), (2, 10719725), (5, 4287890), (10, 2143945), (23, 932150), (25, 857578), (46, 466075), (50, 428789), (103, 208150), (115, 186430), (181, 118450), (206, 104075), (230, 93215), (362, 59225), (515, 41630), (575, 37286), (905, 23690), (1030, 20815), (1150, 18643), (1810, 11845), (2369, 9050), (2575, 8326), (4163, 5150), (4525, 4738)]