18946040

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{257}}^1$

素因数の和:384

約数の個数: 64

約数和(自身を含む): 45511200

約数和(自身を除く): 26565160

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 97, 152, 190, 194, 257, 380, 388, 485, 514, 760, 776, 970, 1028, 1285, 1843, 1940, 2056, 2570, 3686, 3880, 4883, 5140, 7372, 9215, 9766, 10280, 14744, 18430, 19532, 24415, 24929, 36860, 39064, 48830, 49858, 73720, 97660, 99716, 124645, 195320, 199432, 249290, 473651, 498580, 947302, 997160, 1894604, 2368255, 3789208, 4736510, 9473020, 18946040]

約数ペア:

[(1, 18946040), (2, 9473020), (4, 4736510), (5, 3789208), (8, 2368255), (10, 1894604), (19, 997160), (20, 947302), (38, 498580), (40, 473651), (76, 249290), (95, 199432), (97, 195320), (152, 124645), (190, 99716), (194, 97660), (257, 73720), (380, 49858), (388, 48830), (485, 39064), (514, 36860), (760, 24929), (776, 24415), (970, 19532), (1028, 18430), (1285, 14744), (1843, 10280), (1940, 9766), (2056, 9215), (2570, 7372), (3686, 5140), (3880, 4883)]