21910040

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{127}}^1\times {\mathrm{227}}^1$

素因数の和:384

約数の個数: 64

約数和(自身を含む): 52531200

約数和(自身を除く): 30621160

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 127, 152, 190, 227, 254, 380, 454, 508, 635, 760, 908, 1016, 1135, 1270, 1816, 2270, 2413, 2540, 4313, 4540, 4826, 5080, 8626, 9080, 9652, 12065, 17252, 19304, 21565, 24130, 28829, 34504, 43130, 48260, 57658, 86260, 96520, 115316, 144145, 172520, 230632, 288290, 547751, 576580, 1095502, 1153160, 2191004, 2738755, 4382008, 5477510, 10955020, 21910040]

約数ペア:

[(1, 21910040), (2, 10955020), (4, 5477510), (5, 4382008), (8, 2738755), (10, 2191004), (19, 1153160), (20, 1095502), (38, 576580), (40, 547751), (76, 288290), (95, 230632), (127, 172520), (152, 144145), (190, 115316), (227, 96520), (254, 86260), (380, 57658), (454, 48260), (508, 43130), (635, 34504), (760, 28829), (908, 24130), (1016, 21565), (1135, 19304), (1270, 17252), (1816, 12065), (2270, 9652), (2413, 9080), (2540, 8626), (4313, 5080), (4540, 4826)]