645366988

素因数分解:

$2^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{271}}^1\times {\mathrm{5003}}^1$

素因数の和:5302

約数の個数: 48

約数和(自身を含む): 1371976704

約数和(自身を除く): 726609716

約数列:

[1, 2, 4, 7, 14, 17, 28, 34, 68, 119, 238, 271, 476, 542, 1084, 1897, 3794, 4607, 5003, 7588, 9214, 10006, 18428, 20012, 32249, 35021, 64498, 70042, 85051, 128996, 140084, 170102, 340204, 595357, 1190714, 1355813, 2381428, 2711626, 5423252, 9490691, 18981382, 23048821, 37962764, 46097642, 92195284, 161341747, 322683494, 645366988]

約数ペア:

[(1, 645366988), (2, 322683494), (4, 161341747), (7, 92195284), (14, 46097642), (17, 37962764), (28, 23048821), (34, 18981382), (68, 9490691), (119, 5423252), (238, 2711626), (271, 2381428), (476, 1355813), (542, 1190714), (1084, 595357), (1897, 340204), (3794, 170102), (4607, 140084), (5003, 128996), (7588, 85051), (9214, 70042), (10006, 64498), (18428, 35021), (20012, 32249)]