1640451868

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{139}}^1\times {\mathrm{743}}^1$

素因数の和:935

約数の個数: 72

約数和(自身を含む): 3333536640

約数和(自身を除く): 1693084772

約数列:

[1, 2, 4, 11, 19, 22, 38, 44, 76, 139, 209, 278, 361, 418, 556, 722, 743, 836, 1444, 1486, 1529, 2641, 2972, 3058, 3971, 5282, 6116, 7942, 8173, 10564, 14117, 15884, 16346, 28234, 29051, 32692, 50179, 56468, 58102, 100358, 103277, 116204, 155287, 200716, 206554, 268223, 310574, 413108, 536446, 551969, 621148, 1072892, 1103938, 1136047, 1962263, 2207876, 2272094, 2950453, 3924526, 4544188, 5900906, 7849052, 11801812, 21584893, 37282997, 43169786, 74565994, 86339572, 149131988, 410112967, 820225934, 1640451868]

約数ペア:

[(1, 1640451868), (2, 820225934), (4, 410112967), (11, 149131988), (19, 86339572), (22, 74565994), (38, 43169786), (44, 37282997), (76, 21584893), (139, 11801812), (209, 7849052), (278, 5900906), (361, 4544188), (418, 3924526), (556, 2950453), (722, 2272094), (743, 2207876), (836, 1962263), (1444, 1136047), (1486, 1103938), (1529, 1072892), (2641, 621148), (2972, 551969), (3058, 536446), (3971, 413108), (5282, 310574), (6116, 268223), (7942, 206554), (8173, 200716), (10564, 155287), (14117, 116204), (15884, 103277), (16346, 100358), (28234, 58102), (29051, 56468), (32692, 50179)]