428156680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{20947}}^1$

素因数の和:21038

約数の個数: 64

約数和(自身を含む): 1116109440

約数和(自身を除く): 687952760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 73, 140, 146, 280, 292, 365, 511, 584, 730, 1022, 1460, 2044, 2555, 2920, 4088, 5110, 10220, 20440, 20947, 41894, 83788, 104735, 146629, 167576, 209470, 293258, 418940, 586516, 733145, 837880, 1173032, 1466290, 1529131, 2932580, 3058262, 5865160, 6116524, 7645655, 10703917, 12233048, 15291310, 21407834, 30582620, 42815668, 53519585, 61165240, 85631336, 107039170, 214078340, 428156680]

約数ペア:

[(1, 428156680), (2, 214078340), (4, 107039170), (5, 85631336), (7, 61165240), (8, 53519585), (10, 42815668), (14, 30582620), (20, 21407834), (28, 15291310), (35, 12233048), (40, 10703917), (56, 7645655), (70, 6116524), (73, 5865160), (140, 3058262), (146, 2932580), (280, 1529131), (292, 1466290), (365, 1173032), (511, 837880), (584, 733145), (730, 586516), (1022, 418940), (1460, 293258), (2044, 209470), (2555, 167576), (2920, 146629), (4088, 104735), (5110, 83788), (10220, 41894), (20440, 20947)]