19867540

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1$

素因数の和:150

約数の個数: 144

約数和(自身を含む): 56306880

約数和(自身を除く): 36439340

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 19, 20, 22, 28, 35, 38, 44, 49, 55, 70, 76, 77, 95, 97, 98, 110, 133, 140, 154, 190, 194, 196, 209, 220, 245, 266, 308, 380, 385, 388, 418, 485, 490, 532, 539, 665, 679, 770, 836, 931, 970, 980, 1045, 1067, 1078, 1330, 1358, 1463, 1540, 1843, 1862, 1940, 2090, 2134, 2156, 2660, 2695, 2716, 2926, 3395, 3686, 3724, 4180, 4268, 4655, 4753, 5335, 5390, 5852, 6790, 7315, 7372, 7469, 9215, 9310, 9506, 10241, 10670, 10780, 12901, 13580, 14630, 14938, 18430, 18620, 19012, 20273, 20482, 21340, 23765, 25802, 29260, 29876, 36860, 37345, 40546, 40964, 47530, 51205, 51604, 52283, 64505, 74690, 81092, 90307, 95060, 101365, 102410, 104566, 129010, 141911, 149380, 180614, 202730, 204820, 209132, 258020, 261415, 283822, 361228, 405460, 451535, 522830, 567644, 709555, 903070, 993377, 1045660, 1419110, 1806140, 1986754, 2838220, 3973508, 4966885, 9933770, 19867540]

約数ペア:

[(1, 19867540), (2, 9933770), (4, 4966885), (5, 3973508), (7, 2838220), (10, 1986754), (11, 1806140), (14, 1419110), (19, 1045660), (20, 993377), (22, 903070), (28, 709555), (35, 567644), (38, 522830), (44, 451535), (49, 405460), (55, 361228), (70, 283822), (76, 261415), (77, 258020), (95, 209132), (97, 204820), (98, 202730), (110, 180614), (133, 149380), (140, 141911), (154, 129010), (190, 104566), (194, 102410), (196, 101365), (209, 95060), (220, 90307), (245, 81092), (266, 74690), (308, 64505), (380, 52283), (385, 51604), (388, 51205), (418, 47530), (485, 40964), (490, 40546), (532, 37345), (539, 36860), (665, 29876), (679, 29260), (770, 25802), (836, 23765), (931, 21340), (970, 20482), (980, 20273), (1045, 19012), (1067, 18620), (1078, 18430), (1330, 14938), (1358, 14630), (1463, 13580), (1540, 12901), (1843, 10780), (1862, 10670), (1940, 10241), (2090, 9506), (2134, 9310), (2156, 9215), (2660, 7469), (2695, 7372), (2716, 7315), (2926, 6790), (3395, 5852), (3686, 5390), (3724, 5335), (4180, 4753), (4268, 4655)]