19954593136

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{139}}^1\times {\mathrm{12763}}^1$

素因数の和:12966

約数の個数: 80

約数和(自身を含む): 42100777600

約数和(自身を除く): 22146184464

約数列:

[1, 2, 4, 8, 16, 19, 37, 38, 74, 76, 139, 148, 152, 278, 296, 304, 556, 592, 703, 1112, 1406, 2224, 2641, 2812, 5143, 5282, 5624, 10286, 10564, 11248, 12763, 20572, 21128, 25526, 41144, 42256, 51052, 82288, 97717, 102104, 195434, 204208, 242497, 390868, 472231, 484994, 781736, 944462, 969988, 1563472, 1774057, 1888924, 1939976, 3548114, 3777848, 3879952, 7096228, 7555696, 8972389, 14192456, 17944778, 28384912, 33707083, 35889556, 65640109, 67414166, 71779112, 131280218, 134828332, 143558224, 262560436, 269656664, 525120872, 539313328, 1050241744, 1247162071, 2494324142, 4988648284, 9977296568, 19954593136]

約数ペア:

[(1, 19954593136), (2, 9977296568), (4, 4988648284), (8, 2494324142), (16, 1247162071), (19, 1050241744), (37, 539313328), (38, 525120872), (74, 269656664), (76, 262560436), (139, 143558224), (148, 134828332), (152, 131280218), (278, 71779112), (296, 67414166), (304, 65640109), (556, 35889556), (592, 33707083), (703, 28384912), (1112, 17944778), (1406, 14192456), (2224, 8972389), (2641, 7555696), (2812, 7096228), (5143, 3879952), (5282, 3777848), (5624, 3548114), (10286, 1939976), (10564, 1888924), (11248, 1774057), (12763, 1563472), (20572, 969988), (21128, 944462), (25526, 781736), (41144, 484994), (42256, 472231), (51052, 390868), (82288, 242497), (97717, 204208), (102104, 195434)]